Quick answers
- Is CVE-2026-88090 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88090 being exploited in the wild.
- How severe is CVE-2026-88090?
- Medium severity, with a CVSS score of 5.4, published 29 October 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-88090?
- 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-2026-88090 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-88090?
- 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 type confusion vulnerability exists in Microsoft Edge's resource handling mechanism, where incompatible type assumptions lead to memory corruption or control-flow hijacking. The flaw is remotely exploitable over the network and requires no authentication or user interaction beyond visiting a malicious webpage, allowing privilege escalation within the browser context.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-10-29: disclosed