CVE-2026-57980: Microsoft Edge (Chromium-based) Tampering Vulnerability

mediumCVSS 5.4CVE-2026-57980

Authentication bypass using an alternate path or channel in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.

CSIRTS triage

vendor: Microsoft product: Edge Authentication bypass

What: This vulnerability allows an unauthorized attacker to perform tampering over a network due to an authentication bypass.
Who is affected: Users of Microsoft Edge (Chromium-based) are affected.
Urgency: Remediation is urgent due to the medium severity and potential for exploitation.
Action: Apply the latest security updates for Microsoft Edge to address this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.4
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57980

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-579800.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-57980	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Microsoft Edge: Vulnerability allows bypassing security measurescert-bund
unknownMicrosoft Edge Multiple Vulnerabilitieshkcert
unknownMultiple vulnerabilities in Microsoft Edge (July 20, 2026)cert-fr-avis
mediumCVE-2026-57980: Authentication bypass using an alternate path or channel in Microsoft Edge (Chromium-based) al…nvd

Recent advisories for Microsoft Edge

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

medium[NEW] [medium] Microsoft Edge for Android: Vulnerability allows disclosure and manipulation of filescert-bund · 2026-07-29
unknownMultiple Vulnerabilities in Microsoft Edge (July 29, 2026)cert-fr-avis · 2026-07-29
mediumCVE-2026-62828: Improper input validation in Microsoft Edge for Android allows an unauthorized attacker to per…nvd · 2026-07-28
medium[NEW] [medium] Microsoft Edge: Multiple vulnerabilities allow information disclosure and spoofing attackscert-bund · 2026-07-27
unknownMicrosoft Edge Multiple Vulnerabilitieshkcert · 2026-07-27
unknownMultiple vulnerabilities in Microsoft Edge (July 27, 2026)cert-fr-avis · 2026-07-27