CVE-2025-31277

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, watchOS 11.6, visionOS 2.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6. Processing maliciously crafted web content may lead to memory corruption.

CVSS Metrics

• v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.13%• Percentile: 32%

Techniques & Countermeasures

• CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

  The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

• apple•ios and ipados

  ≥ unspecified, < 18.6

• apple•ipados

  < 18.6

• apple•iphone_os

  < 18.6

• apple•macos

  ≥ unspecified, < 15.6 | ≥ 15.0, < 15.6

• apple•safari

  ≥ unspecified, < 18.6 | < 18.6

• apple•tvos

  ≥ unspecified, < 18.6 | < 18.6

• apple•visionos

  ≥ unspecified, < 2.6 | < 2.6

• apple•watchos

  ≥ unspecified, < 11.6 | < 11.6

References (12)

• https://support.apple.com/en-us/124152
• https://support.apple.com/en-us/124149
• https://support.apple.com/en-us/124153
• https://support.apple.com/en-us/124154
• https://support.apple.com/en-us/124155
• https://support.apple.com/en-us/124147
• http://seclists.org/fulldisclosure/2025/Aug/0
• http://seclists.org/fulldisclosure/2025/Jul/36
• http://seclists.org/fulldisclosure/2025/Jul/32
• http://seclists.org/fulldisclosure/2025/Jul/30
• https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31277