Microsoft Edge zero-day exploited in the wild
ANSSI warns CVE-2026-85046, a remote code execution flaw in Microsoft Edge versions before 152.0.4191.62, is being actively exploited.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- CISA lists CVE-2026-85046 as exploited in the wild.
ANSSI (CERT-FR) issued an advisory regarding CVE-2026-85046, a vulnerability affecting Microsoft Edge versions prior to 152.0.4191.62. The flaw allows an attacker to achieve remote arbitrary code execution. Microsoft has confirmed that this vulnerability is being actively exploited in the wild, making patching a priority for organizations running affected versions of the browser.
No technical details of the exploitation chain were disclosed in this bulletin. Defenders should apply the vendor patch referenced in the Microsoft Security Response Center bulletin as soon as possible, and prioritize deployment given the confirmed active exploitation status. Organizations should verify Edge browser versions across their fleet and ensure automatic updates are enabled or push the patch through managed update mechanisms.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1159
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