Vulnerability · Published Oct 29, 2026 · Assigned by microsoft
CVE-2026-85899Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
High 8.1
In plain English
A high-severity use-after-free in Microsoft Edge (Chromium-based) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 49.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 – before 155.0.4283.45 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C
References
- Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability vendor-advisory, patch