CVE-2026-20639

HIGH EPSS 44.2%
Published Mar 25, 20263mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 25, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
44.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 3

VendorProductVersionRange
applemacos*≥14.0  –  <14.8.5
applemacos*≥15.0  –  <15.7.5
applemacos*≥26.0  –  <26.3

References 3

  • support.apple.com https://support.apple.com/en-us/126348
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/126795
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/126796
    Release NotesVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.