01 Record

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

MediumKEVPUBLISHEDCNA: apple

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2023-09-25. Federal remediation due 2023-10-16.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

4.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.7% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2023-09-21 18:23Z2 YR AGO

Last updated

2025-11-04 19:21Z10 MO AGO

Reserved

2023-09-06

Assigning CNA

apple

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weaknesses

CWE-295Improper Certificate ValidationBase

Data version

5.2

Document digest

ceaf2a41d45a048abad60afe078f5d47b914649c63bba1db6258fd55794ba86b

05 Affected products

VendorProductVersionsPlatforms

AppleiOS and iPadOS< 16.7—

ApplemacOS< 13.6—

06 References

support.apple.comhttps://support.apple.com/en-us/HT213927
support.apple.comhttps://support.apple.com/en-us/HT213931
support.apple.comhttps://support.apple.com/kb/HT213931
support.apple.comhttps://support.apple.com/kb/HT213927
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41991government-resource

01 Record index

CVE-2023-41991

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-41991

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References