# CVE-2023-41991

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.

- Page: https://www.vulneraibility.com/cve/CVE-2023-41991
- CVSS: 5.5
- Known exploited: yes, in CISA KEV since 2023-09-25; CISA due date 2023-10-16
- EPSS: 13.38% (percentile 96.5)
- Unvetted proof-of-concept code on GitHub: 3 GitHub proofs of concept (first 2023-11-28)
- CISA SSVC: exploitation active, automatable no, technical impact partial (assessed 2025-02-04)
- Weakness: CWE-295
- Published: 2023-09-21

## Affected versions

- Apple iOS and iPadOS: affected < 16.7
- Apple macOS: affected < 13.6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://support.apple.com/en-us/HT213927
- [other] https://support.apple.com/en-us/HT213931
- [other] https://support.apple.com/kb/HT213931
- [other] https://support.apple.com/kb/HT213927
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41991

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.