CVE-2026-85899
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-85899- CVSS 3.1
- 8.1 High
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 - Weakness
- CWE-416
- Updated
- 2026-11-02
EUVDEUVD-2026-112936
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
- Record
EUVD-2026-112936- CVSS 3.1
- 8.1 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-c446-4g2q-c2xx
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate...
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
- Record
GHSA-c446-4g2q-c2xx- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-85899- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-03
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts, products, references | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-85899 is a high vulnerability (CVSS 8.1) in Microsoft Edge (chromium-based), published October 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 51st percentile. No source names a fixed version.