Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-70341

CVE-2026-70341HIGH

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .0066   50.0     —

AFFECTED
  Product                          Versions   Fixed
  Microsoft Edge (Chromium-based)  1.0.0.0 –  —
  Microsoft Edge for Android       1.0.0.0 –  —
  Microsoft Edge for iOS           1.0.0.0 –  —
  Microsoft Edge for Linux         1.0.0 –    —
  Microsoft Edge for MAC           1.0.0.0 –  —

TIMELINE
  Aug 4   Reserved by microsoft
  Sep 11  Published (CNA: microsoft)
  Oct 6   RESCORED — CVE-2026-70341 (Microsoft Edge (Chromium-based)). CVSS 8.5 → 8.8 (NVD).

CWE-416 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 4, 2026	Reserved	Reserved by microsoft
September 11, 2026	Published	Published (CNA: microsoft)
October 6, 2026	RESCORED	RESCORED — CVE-2026-70341 (Microsoft Edge (Chromium-based)). CVSS 8.5 → 8.8 (NVD).

Affected

Affected products and packages — 5 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Microsoft Edge (Chromium-based)	—	1.0.0.0	—
Microsoft	Microsoft Edge for Android	—	1.0.0.0	—
Microsoft	Microsoft Edge for iOS	—	1.0.0.0	—
Microsoft	Microsoft Edge for Linux	—	1.0.0	—
Microsoft	Microsoft Edge for MAC	—	1.0.0.0	—

Weaknesses

CWE-416

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341 [Patch, Vendor Advisory]

Authoritative record: CVE-2026-70341 at cve.org

Vendors: microsoft

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-70341 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.