Quick answers
- Is CVE-2026-88077 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88077 being exploited in the wild.
- How severe is CVE-2026-88077?
- High severity, with a CVSS score of 8.8, published 29 October 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-88077?
- 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-2026-88077 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-88077?
- 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
An integer overflow or wraparound condition exists in Microsoft Edge (Chromium-based) that can be exploited to escalate privileges. The vulnerability is reachable over the network without requiring user authentication, allowing an attacker to trigger the overflow and execute arbitrary code with elevated privileges on the affected system.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-10-29: disclosed