CVE-2025-43343

Advisory lineage Upstream: 0 Downstream: 18
Modified
Published: 15 Sept 2025, 22:35
Last modified:17 Dec 2025, 14:48

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
0.15% LOW
0% probability -0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 Sept 2025, 22:35
Published
Vulnerability first disclosed
17 Dec 2025, 14:48
Last Modified
Vulnerability information updated

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26, tvOS 26, watchOS 26, iOS 26 and iPadOS 26, visionOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.15%• Percentile: 35%

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, < 26

  • apple•ipados

    < 26.0

  • apple•iphone_os

    < 26.0

  • apple•macos

    < 26.0

  • apple•safari

    ≥ unspecified, < 26 | < 26.0

  • apple•tvos

    ≥ unspecified, < 26 | < 26.0

  • apple•visionos

    ≥ unspecified, < 26 | < 26.0

  • apple•watchos

    ≥ unspecified, < 26 | < 26.0

  • Unknown•WebKitGTK

    < 2.50.1

  • wpewebkit•wpe_webkit

    < 2.50.1

References (14)