CVE-2026-83831
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-83831- CVSS 3.1
- 8.8 High
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 - Weakness
- CWE-415
- Updated
- 2026-11-02
EUVDEUVD-2026-111391
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- Record
EUVD-2026-111391- CVSS 3.1
- 8.8 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qvvf-m4mf-g99c
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code...
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- Record
GHSA-qvvf-m4mf-g99c- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
NVD
Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-83831- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-03
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts, products | NVD | |
| 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-2026-83831 is a high vulnerability (CVSS 8.8) in Microsoft Edge (chromium-based), published October 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.