CVE-2025-43526: Apple Safari · Open Redirect
Affects Apple SafariSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical : upgrade to 26.2 as a priority.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 26.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 17 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade Apple Safari to 26.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apple Safari | Affected
| Fixed in
|
AI-suggested
To mitigate CVE-2025-43526, organizations should: 1) Immediately update Apple Safari to version 26.2 or later and macOS to Tahoe 26.2 or later, where the vulnerability is fixed. 2) Enforce strict policies restricting the use of file URLs in web content, especially in environments where Lockdown Mode is enabled. 3) Implement endpoint security solutions capable of monitoring and blocking suspicious local file access or execution patterns. 4) Educate users about the risks of opening local files from untrusted sources, even when using Lockdown Mode. 5) Employ network-level controls to detect and prevent delivery of malicious local file URLs via phishing or other attack vectors. 6) Conduct regular security audits and penetration testing focused on local file handling and browser security configurations. 7) Consider disabling Lockdown Mode temporarily if patching is delayed, while balancing the security trade-offs. 8) Monitor security advisories and threat intelligence feeds for any emerging exploits targeting this vulnerability. These steps go beyond generic patching by emphasizing policy, user awareness, and layered detection to reduce exploitation likelihood.
Description
This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use Web APIs that should be restricted.