CVE-2025-21399: Microsoft Edge (Chromium-based) Update Elevation of Privilege Vulnerability
Analyzed
Published 17-01-2025Last modified 09-06-2026
Vulnerability summary
CVE-2025-21399 is a high (CVSS 7.4) Untrusted Search Path vulnerability in microsoft edge_update. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.7% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.4/10
010
High · v3.1 (CVE.org)EPSS score
0.68%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference
Timeline
- 17-01-2025PublishedVulnerability first disclosed.
- 09-06-2026Last modifiedVulnerability information updated.
Description
Microsoft Edge (Chromium-based) Update Elevation of Privilege Vulnerability
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.4HighCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.68%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.68% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
2 foundExploit Reference (vicarius.io)
Maturity: unknown
Exploit Reference (vicarius.io)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Microsoft2 products
- edge_update< 1.3.195.43
- microsoft edge update setup≥ 1.0.0.0, < 1.3.195.43
1 vendor · 2 products
