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

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). 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

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