CVE-2025-21399 json
Microsoft Edge (Chromium-based) Update Elevation of Privilege Vulnerability
published 2025-01-17 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2459
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Microsoft Edge (Chromium-based) Update Elevation of Privilege Vulnerability
Patch / fix
- Microsoft Microsoft Edge Update Setup 1.3.195.43
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- vicarius.io https://www.vicarius.io/vsociety/posts/elevation-of-privilege-vulnerability-in-microsoft-edge-chromium-based-detection-script referenced PoC, tagged "exploit" by a source, unverified
- vicarius.io https://www.vicarius.io/vsociety/posts/elevation-of-privilege-vulnerability-in-microsoft-edge-chromium-based-mitigation-script referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft Edge Update Setup
Classification
- Weakness
-
- CWE-426 Untrusted Search Path
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-21399
vendor-advisory, patch
-
vicarius.io
/vsociety/posts/elevation-of-privilege-vulnerability-in-microsoft-edge-chromium-based-detection-script
exploit, third-party-advisory
-
vicarius.io
/vsociety/posts/elevation-of-privilege-vulnerability-in-microsoft-edge-chromium-based-mitigation-script
exploit, third-party-advisory
Sources
- CVE List CVE-2025-21399
- NVD CVE-2025-21399
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