[NEW] [medium] Microsoft Edge: Multiple vulnerabilities allow information disclosure and spoofing attacks

mediumCVE-2026-57989 CVE-2026-57990 CVE-2026-57978

A remote, anonymous attacker can exploit multiple vulnerabilities in Microsoft Edge to disclose information or conduct spoofing attacks.

CSIRTS triage

vendor: Microsoft product: Edge Information disclosureOther

What: Multiple vulnerabilities in Microsoft Edge allow remote attackers to disclose information or conduct spoofing attacks.
Who is affected: Users of Microsoft Edge.
Urgency: Remediation is medium due to the potential for information disclosure and spoofing attacks.
Action: Update Microsoft Edge to the latest version.

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

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-27
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2523

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-2026-579890.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all scored CVEs.
Low exploitation riskCVE-2026-579900.94% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 58% of all scored CVEs.
Low exploitation riskCVE-2026-579780.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-57989	coverage & exploitation status	NVD · CVE.org
CVE-2026-57990	coverage & exploitation status	NVD · CVE.org
CVE-2026-57978	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

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
unknownMicrosoft Edge Multiple Vulnerabilitieshkcert · 2026-07-27
unknownMultiple vulnerabilities in Microsoft Edge (July 27, 2026)cert-fr-avis · 2026-07-27
highCVE-2026-57990: Files or directories accessible to external parties in Microsoft Edge (Chromium-based) allows …nvd · 2026-07-26