CVE-2025-43521 — Improper Verification of Cryptographic Signature in Apple Macos

CWE-347 — Improper Verification of Cryptographic Signature6 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Apple Macos
Timeline
PublishedDec 12

Description

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access sensitive user data.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5apple/macos< 26.2+1
▶NVDapple/macos< 15.7.3

🔴Vulnerability Details

2
GHSA
GHSA-cx5h-j8w3-whpr: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions↗2025-12-12
▶
CVEList
CVE-2025-43521: A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions↗2025-12-12
▶

📋Vendor Advisories

2
Apple
CVE-2025-43521: macOS Tahoe 26.2↗2025-12-12
▶
Apple
CVE-2025-43521: macOS Sequoia 15.7.3↗2025-12-12
▶

🕵️Threat Intelligence

1
Wiz
CVE-2025-43521 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2025-43521 — Apple Macos vulnerability | cvebase