Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

published 2026-05-18 5 mo ago modified 2026-10-14 25 d ago also EUVD-2026-30785

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

Microsoft Microsoft Edge (Chromium-based) 148.0.3967.70

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45495 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-05-18)

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Microsoft Edge (Chromium-based)

Classification

Weakness

CWE-35 Path Traversal: '.../...//'
CWE-94 Improper Control of Generation of Code
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-20 Improper Input Validation

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2026-45495
vendor-advisory, patch

Sources

CVE List CVE-2026-45495
NVD CVE-2026-45495

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