{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4942","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-03-26T21:14:44.344Z","datePublished":"2026-07-17T19:32:02.440Z","dateUpdated":"2026-07-20T13:52:49.123Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-07-17T19:32:02.440Z"},"title":"IBM i is Affected by Algorithm Downgrade in Transport Layer Security []","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-757","description":"CWE-757 Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')","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 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configuration.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrade the Transport Layer Security (TLS) protocol to a version disabled in the server configuration.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7278992","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":5.9,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}}],"solutions":[{"lang":"en","value":"IBM i Release5770-SS1\nPTF Number(s)PTF Download Link(s)7.6MJ09141 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09141 7.5MJ09140 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09140 7.4MJ09139 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09139 7.3MJ09138 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09138 \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":"<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>MJ09141</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09141\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09141</a></td></tr><tr><td>7.5</td><td>MJ09140</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09140\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09140</a></td></tr><tr><td>7.4</td><td>MJ09139</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09139\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09139</a></td></tr><tr><td>7.3</td><td>MJ09138</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09138\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ09138</a></td></tr></tbody></table></div><p>IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.</p>"}]}],"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T13:52:40.695670Z","id":"CVE-2026-4942","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-07-20T13:52:49.123Z"}}]}}