CVE-2025-59251: microsoft edge_chromium Stack-based Buffer Overflow
CVSS: 7.6v3.1HighModified
Published 24-09-2025Last modified 26-02-2026
Vulnerability summary
CVE-2025-59251 is a high (CVSS 7.6) Stack-based Buffer Overflow vulnerability in microsoft edge_chromium. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.4% of scored vulnerabilities.
CVSS score
7.6/10
010
High · v3.1 (CVE.org)EPSS score
0.51%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-09-2025PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
Description
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L/RC:CSourcesAll 2 agree
- NVDNIST7.6HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
+0.01 pp
From 0.50% on 21-09-2026
21-09-202621-10-2026
EPSS score0.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-94Improper Control of Generation of Code ('Code Injection')The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
Affected systems
Microsoft2 products
- edge_chromium< 140.0.3485.81
- microsoft edge (chromium-based)≥ 1.0.0.0, < 140.0.3485.81
1 vendor · 2 products
