Quick answers
- Is CVE-2026-66324 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66324 being exploited in the wild.
- How severe is CVE-2026-66324?
- Medium severity, with a CVSS score of 6.5, published 28 August 2026.
- Which products and versions are affected?
- Microsoft Edge <UNKNOWN>.
- Is there a fix for CVE-2026-66324?
- 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-2026-66324 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-66324?
- Check whether you run Microsoft Edge or Microsoft Edge Chromium 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
The vulnerability is classified as external control of file name or path (CWE-434/CWE-22 class), affecting the Chromium-based Microsoft Edge browser. The flaw permits an attacker to influence file path or name handling, enabling spoofing attacks delivered over a network. Attack vector is network-based with no authentication required. An attacker can craft malicious requests to trick users into believing they are accessing legitimate content when in fact they are viewing attacker-controlled resources. Patches are available through Microsoft Security Updates.
Affected products
- Microsoft Edge <UNKNOWN>
Timeline
- 2026-08-28: disclosed