# CVE-2026-57980: Microsoft Edge authentication bypass in Chromium engine

Source: https://junglewise.ai/threats/cve-2026-57980-microsoft-edge-authentication-bypass-in-chromium-engine  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-17. Updated: 2026-07-17  
License: CC BY 4.0 with a link back

CVE-2026-57980 · Severity: medium · CVSS 5.4 · Published 2026-07-17

Microsoft Edge is a web browser used to access internet and intranet resources. A security flaw allows an attacker to bypass authentication mechanisms, potentially leading to unauthorized data modification or tampering. This could result in a loss of data integrity or the presentation of fraudulent information to the user.

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

## Quick answers

**Is CVE-2026-57980 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-57980 being exploited in the wild.

**How severe is CVE-2026-57980?** Medium severity, with a CVSS score of 5.4, published 17 July 2026.

**Which products and versions are affected?** Microsoft Edge (Chromium-based) < 150.0.4078.80.

**Is there a fix for CVE-2026-57980?** 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-2026-57980 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-57980?** Check whether you run Microsoft Edge (Chromium-based) 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

This vulnerability is classified as an authentication bypass using an alternate path or channel (CWE-288) within the Chromium-based version of Microsoft Edge. An unauthenticated attacker can exploit this over the network, though user interaction is required for a successful attack. The flaw allows for tampering and unauthorized access to certain data (Low Confidentiality and Low Integrity impact). Microsoft has addressed this in versions 150.0.4078.80 and later.

## Affected products

- Microsoft Edge (Chromium-based) < 150.0.4078.80

## Timeline

- 2026-07-17: disclosed
- 2026-07-17: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57980](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57980)

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