{"id":"CVE-2023-41991","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-41991","summary":"A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple…","details":"A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.","published":"2023-09-21T19:15:11.283","modified":"2026-06-17T06:23:13.087","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},"epss":{"score":0.04547,"percentile":0.91044,"asOf":"2026-09-14"},"cisaKev":null,"exploitsKnown":4,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT213927"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT213931"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT213927"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT213931"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT213927"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT213931"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41991"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T06:23:13.087"}}