CVE-2026-70341: microsoft edge Use After Free
CVSS: 8.8v3.1HighAnalyzed
Published 11-09-2026Last modified 08-10-2026
Vulnerability summary
CVE-2026-70341 is a high (CVSS 8.8) Use After Free vulnerability in microsoft edge. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.8% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
0.55%
0%100%
Low · -0.07 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-09-2026PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSources2 sources · 8.5–8.8
- CVE.orgCNA8.5HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:CDiffers
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
-0.07 pp
From 0.62% on 20-09-2026
20-09-202620-10-2026
EPSS score0.55%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft7 products
- edgena | < 152.0.4191.52
- edge_chromium< 152.0.4191.52
- microsoft edge (chromium-based)≥ 1.0.0.0, < 152.0.4191.52
- microsoft edge for android≥ 1.0.0.0, < 152.0.4191.52
- microsoft edge for ios≥ 1.0.0.0, < 152.0.4191.52
1 vendor · 7 products
