# CVE-2026-66324: Microsoft Edge path traversal spoofing vulnerability

Source: https://junglewise.ai/threats/cve-2026-66324-microsoft-edge-path-traversal-spoofing-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-28. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-66324 · Severity: medium · CVSS 6.5 · Published 2026-08-28

Microsoft Edge, the company's web browser, contains a flaw that allows attackers to manipulate file paths and names, potentially leading to spoofing attacks where users are tricked into accessing malicious content. An attacker can exploit this over a network without authentication, compromising user trust in the browser's security indicators.

Technologies: [Microsoft Edge](https://junglewise.ai/threats/technologies/edge), [Microsoft Edge Chromium](https://junglewise.ai/threats/technologies/edge-chromium). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## 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

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66324](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66324)

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