VulnerabilityAnalyzed
CVE-2026-66798
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
MEDIUM 4.3EPSS 0.79%
Does this matter?
Lower severity and a low EPSS score (0.79%). Track it; it rarely justifies an emergency change on its own.
Description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- EPSS
- 0.79% probability · 56th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- microsoft/edge chromium
- Source
- secure@microsoft.com
EPSS 0.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.