All vulnerabilities
CVE-2023-41991

Apple Multiple Products Improper Certificate Validation Vulnerability

Apple Multiple Products
Open in ThreatlineRecord JSON
CVSS
5.5Medium
ExploitationExploited in the wildAdded to KEV 25 Sep 2023CISA KEV
Exploit odds (EPSS)13.4%Chance of exploitation activity in the next 30 days, higher than 96% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in16.7Also 13.6CVE List
Federal deadline16 Oct 2023Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 21 Sep 2023, 18:23 UTCPublishedCVE List
  2. 25 Sep 2023Added to CISA KEVCISA KEV

Description

Apple iOS, iPadOS, macOS, and watchOS contain an improper certificate validation vulnerability that can allow a malicious app to bypass signature validation.

Text from CVE List

Affected versions 2

  • iOS and iPadOSaffected: unspecified before 16.7CVE List
  • macOSaffected: unspecified before 13.6CVE List

References 7