{"id":"CVE-2026-20657","state":"PUBLISHED","title":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sono","description":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.","publishedAt":"2026-03-25T00:31:59.386Z","updatedAt":"2026-10-26T20:36:41.111Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"apple","products":["Apple iOS and iPadOS","Apple macOS","Apple visionOS"],"affected":[{"vendor":"Apple","product":"iOS and iPadOS","versions":[{"version":"0","status":"affected","lessThan":"18.7.7","versionType":"custom"},{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]},{"vendor":"Apple","product":"macOS","versions":[{"version":"0","status":"affected","lessThan":"14.8.5","versionType":"custom"},{"version":"0","status":"affected","lessThan":"15.7.5","versionType":"custom"},{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]},{"vendor":"Apple","product":"visionOS","versions":[{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]}],"references":["https://support.apple.com/en-us/126792","https://support.apple.com/en-us/126793","https://support.apple.com/en-us/126794","https://support.apple.com/en-us/126795","https://support.apple.com/en-us/126796","https://support.apple.com/en-us/126799"],"weaknesses":["CWE-119","CWE-125","CWE-787"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20657.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20657","state":"PUBLISHED","datePublished":"2026-03-25T00:31:59.386Z","dateUpdated":"2026-10-26T20:36:41.111Z","assignerShortName":"apple","assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","dateReserved":"2025-11-11T14:43:07.865Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination."}],"affected":[{"vendor":"Apple","product":"iOS and iPadOS","versions":[{"version":"0","status":"affected","lessThan":"18.7.7","versionType":"custom"},{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]},{"vendor":"Apple","product":"macOS","versions":[{"version":"0","status":"affected","lessThan":"14.8.5","versionType":"custom"},{"version":"0","status":"affected","lessThan":"15.7.5","versionType":"custom"},{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]},{"vendor":"Apple","product":"visionOS","versions":[{"version":"0","status":"affected","lessThan":"26.4","versionType":"custom"}]}],"references":[{"url":"https://support.apple.com/en-us/126792"},{"url":"https://support.apple.com/en-us/126793"},{"url":"https://support.apple.com/en-us/126794"},{"url":"https://support.apple.com/en-us/126795"},{"url":"https://support.apple.com/en-us/126796"},{"url":"https://support.apple.com/en-us/126799"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Parsing a maliciously crafted file may lead to an unexpected app termination"}]}],"providerMetadata":{"shortName":"apple","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","dateUpdated":"2026-10-26T20:36:41.111Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-26T13:50:36.656387Z","id":"CVE-2026-20657","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"}]},{"descriptions":[{"cweId":"CWE-125","type":"CWE","lang":"en","description":"CWE-125 Out-of-bounds Read"}]},{"descriptions":[{"cweId":"CWE-787","type":"CWE","lang":"en","description":"CWE-787 Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-26T13:50:39.549Z"}}]}}}