{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18846", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-08-04T15:07:01.355Z", "datePublished": "2026-08-13T18:58:23.163Z", "dateUpdated": "2026-08-13T19:32:50.526Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-08-13T18:58:23.163Z"}, "title": "IBM i is Affected By Multiple Vulnerabilities in Host Servers", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "i", "versions": [{"status": "affected", "version": "7.6"}, {"status": "affected", "version": "7.5"}, {"status": "affected", "version": "7.4"}, {"status": "affected", "version": "7.3"}], "cpes": ["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7283578", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "solutions": [{"lang": "en", "value": "IBM strongly recommends addressing the vulnerability now.\n\n\n\nHost Servers\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ11101\nSJ11097 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097 7.5SJ11102\nSJ11098\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098 7.4SJ11103\nSJ11099\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099 7.3SJ11104\nSJ11100\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100 \n\n\n\n\n\n\n\nDebug Server\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ10899 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899 \n\n\n\n\n\n\n\nTelnet\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ11022 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022 \n\n\n\n\n\n\n\nDRDA/DDM\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ10848 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848 \n\n\n\n\n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p><strong>IBM strongly recommends addressing the vulnerability now.</strong></p><p><strong>Host Servers</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ11101<br/>SJ11097</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097</a></td></tr><tr><td>7.5</td><td>SJ11102<br/>SJ11098<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098</a></td></tr><tr><td>7.4</td><td>SJ11103<br/>SJ11099<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099</a></td></tr><tr><td>7.3</td><td>SJ11104<br/>SJ11100<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11104\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11104\u00a0</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100</a></td></tr></tbody></table></div><p></p><p><strong>Debug Server</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong><strong>5770-SS1</strong><br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ10899</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899</a></td></tr></tbody></table></div><p></p><p><strong>Telnet</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ11022</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022</a></td></tr></tbody></table></div><p></p><p><strong>DRDA/DDM</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ10848</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848</a></td></tr></tbody></table></div><p></p><p>IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.</p>"}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-13T19:32:41.002862Z", "id": "CVE-2026-18846", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T19:32:50.526Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-18846", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-13T19:32:41.002862Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T19:32:45.679Z"}}], "cna": {"title": "IBM i is Affected By Multiple Vulnerabilities in Host Servers", "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"], "vendor": "IBM", "product": "i", "versions": [{"status": "affected", "version": "7.6"}, {"status": "affected", "version": "7.5"}, {"status": "affected", "version": "7.4"}, {"status": "affected", "version": "7.3"}]}], "solutions": [{"lang": "en", "value": "IBM strongly recommends addressing the vulnerability now.\n\n\n\nHost Servers\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ11101\nSJ11097 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097 7.5SJ11102\nSJ11098\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098 7.4SJ11103\nSJ11099\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099 7.3SJ11104\nSJ11100\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100 \n\n\n\n\n\n\n\nDebug Server\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ10899 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899 \n\n\n\n\n\n\n\nTelnet\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ11022 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022 \n\n\n\n\n\n\n\nDRDA/DDM\n\nIBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6SJ10848 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848 \n\n\n\n\n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.", "supportingMedia": [{"type": "text/html", "value": "<p><strong>IBM strongly recommends addressing the vulnerability now.</strong></p><p><strong>Host Servers</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ11101<br/>SJ11097</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11101</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11097</a></td></tr><tr><td>7.5</td><td>SJ11102<br/>SJ11098<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11102</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11098</a></td></tr><tr><td>7.4</td><td>SJ11103<br/>SJ11099<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11103</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11099</a></td></tr><tr><td>7.3</td><td>SJ11104<br/>SJ11100<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11104\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11104\u00a0</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11100</a></td></tr></tbody></table></div><p></p><p><strong>Debug Server</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong><strong>5770-SS1</strong><br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ10899</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10899</a></td></tr></tbody></table></div><p></p><p><strong>Telnet</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ11022</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11022</a></td></tr></tbody></table></div><p></p><p><strong>DRDA/DDM</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ10848</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10848</a></td></tr></tbody></table></div><p></p><p>IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.</p>", "base64": false}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7283578", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en", "value": "IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server.", "supportingMedia": [{"type": "text/html", "value": "<p>IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write"}]}], "providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-08-13T18:58:23.163Z"}}}, "cveMetadata": {"cveId": "CVE-2026-18846", "state": "PUBLISHED", "dateUpdated": "2026-08-13T19:32:50.526Z", "dateReserved": "2026-08-04T15:07:01.355Z", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "datePublished": "2026-08-13T18:58:23.163Z", "assignerShortName": "ibm"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"], "product": "i", "vendor": "IBM", "versions": [{"status": "affected", "version": "7.6"}, {"status": "affected", "version": "7.5"}, {"status": "affected", "version": "7.4"}, {"status": "affected", "version": "7.3"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server."}], "id": "CVE-2026-18846", "lastModified": "2026-08-13T20:36:48.443", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18846", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-13T19:32:41.002862Z", "version": "2.0.3"}}]}, "published": "2026-08-13T20:17:19.713", "references": [{"source": "[email protected]", "url": "https://www.ibm.com/support/pages/node/7283578"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.3"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "i", "source": "cna", "vendor": "IBM"}, "product": "i", "vendor": "ibm"}], "created": "2026-08-13T21:30:10.760869+00:00", "updated": "2026-08-13T21:30:10.760887+00:00", "vendors": ["ibm", "ibm$PRODUCT$i"]}