What’s Vulnerable › Vulnerabilities

CVE-2026-39870

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-11 · updated 2026-10-26
• Weakness: CWE-119

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Processing a maliciously crafted image may corrupt process memory.

Affected products

• Apple macOS: from 14.0 before 14.8.7; from 15.0 before 15.7.7; from 26.0 before 26.5 — fixed in 14.8.7, 15.7.7, 26.5

How to fix

Upgrade to a fixed version: Apple macOS 14.8.7, 15.7.7, 26.5. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/127115
• https://support.apple.com/en-us/127116
• https://support.apple.com/en-us/127117

Get alerted when CVE-2026-39870 or the next vulnerability affects your stack