Multiple vulnerabilities in Microsoft Edge (June 29, 2026)

unknownCVE-2026-50521 CVE-2026-13034 CVE-2026-12442 CVE-2026-13027 CVE-2026-13024 CVE-2026-13025

Multiple vulnerabilities have been discovered in Microsoft Edge. They allow an attacker to cause remote arbitrary code execution and an unspecified security issue by the vendor.

CSIRTS triage

vendor: Microsoft product: Microsoft Edge Remote code executionOther

What: Multiple vulnerabilities in Microsoft Edge can lead to remote code execution and other unspecified issues.
Who is affected: Users of Microsoft Edge, specifics not detailed in the advisory.
Urgency: Remediation is urgent due to the potential for remote code execution and other security issues.
Action: Update Microsoft Edge to the latest version to mitigate these vulnerabilities.

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

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-06-29
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0811/

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-2026-505210.82% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all scored CVEs.
Low exploitation riskCVE-2026-130340.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Low exploitation riskCVE-2026-124420.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
Low exploitation riskCVE-2026-130270.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all scored CVEs.
Low exploitation riskCVE-2026-130240.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Low exploitation riskCVE-2026-130250.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-130230.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-124690.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-120280.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.
Low exploitation riskCVE-2026-130220.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50521	coverage & exploitation status	NVD · CVE.org
CVE-2026-13034	coverage & exploitation status	NVD · CVE.org
CVE-2026-12442	coverage & exploitation status	NVD · CVE.org
CVE-2026-13027	coverage & exploitation status	NVD · CVE.org
CVE-2026-13024	coverage & exploitation status	NVD · CVE.org
CVE-2026-13025	coverage & exploitation status	NVD · CVE.org
CVE-2026-13023	coverage & exploitation status	NVD · CVE.org
CVE-2026-12469	coverage & exploitation status	NVD · CVE.org
CVE-2026-12028	coverage & exploitation status	NVD · CVE.org
CVE-2026-13022	coverage & exploitation status	NVD · CVE.org
CVE-2026-13021	coverage & exploitation status	NVD · CVE.org
CVE-2026-13033	coverage & exploitation status	NVD · CVE.org
CVE-2026-12032	coverage & exploitation status	NVD · CVE.org
CVE-2026-11647	coverage & exploitation status	NVD · CVE.org
CVE-2026-13031	coverage & exploitation status	NVD · CVE.org
CVE-2026-13029	coverage & exploitation status	NVD · CVE.org
CVE-2026-13038	coverage & exploitation status	NVD · CVE.org
CVE-2026-12438	coverage & exploitation status	NVD · CVE.org
CVE-2026-13026	coverage & exploitation status	NVD · CVE.org
CVE-2026-12448	coverage & exploitation status	NVD · CVE.org
CVE-2026-13036	coverage & exploitation status	NVD · CVE.org
CVE-2026-13035	coverage & exploitation status	NVD · CVE.org
CVE-2026-12030	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[UPDATE] [high] Microsoft Edge (Chromium-based): Vulnerability allows code executioncert-bund
highCVE-2026-50521: Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute cod…nvd
unknownMicrosoft Edge Remote Code Execution Vulnerabilityhkcert
unknownGoogle Chrome Multiple Vulnerabilitieshkcert
unknownDSA-6364-1 chromium - security updatedebian
unknownMultiple vulnerabilities in Google Chrome (June 25, 2026)cert-fr-avis
unknownCVE-2026-13034: Chromium: CVE-2026-13034 Inappropriate implementation in Passwordsmsrc
unknownCVE-2026-12028: Chromium: CVE-2026-12028 Use after free GPUmsrc
unknownCVE-2026-13035: Chromium: CVE-2026-13035 Use after free in Bluetoothmsrc
highCVE-2026-50521: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerabilitymsrc
unknownCVE-2026-13029: Chromium: CVE-2026-13029 Use after free in Web Authenticationmsrc
unknownCVE-2026-13031: Chromium: CVE-2026-13031 Use after free in Blinkmsrc

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.

unknownMicrosoft Edge security advisory (AV26-682)cccs · 2026-07-10
high[NEW] [high] Microsoft Edge: Multiple vulnerabilitiescert-bund · 2026-07-09
unknownVulnerability in Microsoft Edge (July 09, 2026)cert-fr-avis · 2026-07-09
highCVE-2026-58525: Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to …nvd · 2026-07-08
unknownMultiple vulnerabilities in Microsoft Edge (July 7, 2026)cert-fr-avis · 2026-07-07
unknownMicrosoft Edge security advisory (AV26-659)cccs · 2026-07-06