Quick answers
- Is CVE-2026-85899 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-85899 being exploited in the wild.
- How severe is CVE-2026-85899?
- High severity, with a CVSS score of 8.1, published 29 October 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-85899?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-85899 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-85899?
- Check whether you run Microsoft Edge at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A use-after-free vulnerability exists in Microsoft Edge (Chromium-based), allowing an authorized attacker to elevate privileges over the network. The vulnerability requires prior authorization and network access to exploit. Successful exploitation grants elevated privileges on the affected system.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-10-29: disclosed