CVE-2026-85899
highUse after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
Vendor / product: Microsoft — edge chromium
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges over a network.
CVSS
8.1
8.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Severity source: NVD CVSS v3.1 (secure@microsoft.com)
Timeline (UTC)
Published: 2026-10-29 16:19
Modified: 2026-11-03 17:56
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-11-03 18:20 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / edge_chromium <155.0.4283.45
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85899
Patch / mitigation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85899
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85899 secure@microsoft.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 18:20 UTC · record ↗