Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

published 2025-09-24 13 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-31059

cvss: 7.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

Microsoft Microsoft Edge (Chromium-based) 140.0.3485.81

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59251 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 13 mo ago (2025-09-25)

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L/RC:C
CNA	3.1	7.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L

Affected products

Microsoft Microsoft Edge (Chromium-based)

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-94 Improper Control of Generation of Code

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2025-59251
vendor-advisory, patch

Sources

CVE List CVE-2025-59251
NVD CVE-2025-59251

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary