{"identifier":"CVE-2026-86981","cve":{"id":"CVE-2026-86981","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.","published":"2026-10-20T01:17:29.540000+00:00","modified":"2026-10-29T16:30:43.690000+00:00","status":"Analyzed","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"15.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"15.8"},{"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"26.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"26.7"}],"weaknesses":["CWE-787"],"references":[{"url":"https://support.apple.com/en-us/149042","source":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/149043","source":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-20T10:11:41.422786Z","id":"CVE-2026-86981","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"15.0","versionEndExcluding":"15.8","matchCriteriaId":"241A56D1-1E33-4317-A053-85AF8E3770B3"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"26.0","versionEndExcluding":"26.7","matchCriteriaId":"1BE83000-26C0-49C5-A966-BB40AD6F8BEE"}]}]}],"source":"nvd","retrieved_at":"2026-10-29T19:36:07.958890+00:00","exploited":false,"kev_stale":false,"products":["apple / macos"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00134,"percentile":0.02891,"date":"2026-10-28","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"support.apple.com","source_url":"https://support.apple.com/en-us/149042","investigate_url":"https://investigate.aeglixmind.com/#support.apple.com"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-86981","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-86981","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-86981","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}