Multiple Vulnerabilities in Microsoft Edge (June 22, 2026)

unknownCVE-2026-12454 CVE-2026-12467 CVE-2026-12439 CVE-2026-12461 CVE-2026-12455 CVE-2026-12464

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

CSIRTS triage

vendor: Microsoft product: Microsoft EdgeOther

What: Multiple vulnerabilities have been discovered in Microsoft Edge.
Who is affected: All deployments of Microsoft Edge are potentially affected.
Urgency: Remediation is necessary as vulnerabilities could be exploited in future attacks.
Action: Update to the latest version of Microsoft Edge.

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: 2026-06-22
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-0791/

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-2026-124540.15% 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-2026-124670.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Low exploitation riskCVE-2026-124390.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Low exploitation riskCVE-2026-124610.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.
Low exploitation riskCVE-2026-124550.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Low exploitation riskCVE-2026-124640.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Low exploitation riskCVE-2026-124470.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
Low exploitation riskCVE-2026-124570.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.
Low exploitation riskCVE-2026-124460.19% 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-2026-124630.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-12454	coverage & exploitation status	NVD · CVE.org
CVE-2026-12467	coverage & exploitation status	NVD · CVE.org
CVE-2026-12439	coverage & exploitation status	NVD · CVE.org
CVE-2026-12461	coverage & exploitation status	NVD · CVE.org
CVE-2026-12455	coverage & exploitation status	NVD · CVE.org
CVE-2026-12464	coverage & exploitation status	NVD · CVE.org
CVE-2026-12447	coverage & exploitation status	NVD · CVE.org
CVE-2026-12457	coverage & exploitation status	NVD · CVE.org
CVE-2026-12446	coverage & exploitation status	NVD · CVE.org
CVE-2026-12463	coverage & exploitation status	NVD · CVE.org
CVE-2026-12465	coverage & exploitation status	NVD · CVE.org
CVE-2026-12437	coverage & exploitation status	NVD · CVE.org
CVE-2026-12440	coverage & exploitation status	NVD · CVE.org
CVE-2026-12444	coverage & exploitation status	NVD · CVE.org
CVE-2026-12453	coverage & exploitation status	NVD · CVE.org
CVE-2026-12443	coverage & exploitation status	NVD · CVE.org
CVE-2026-12460	coverage & exploitation status	NVD · CVE.org
CVE-2026-12449	coverage & exploitation status	NVD · CVE.org
CVE-2026-12451	coverage & exploitation status	NVD · CVE.org
CVE-2026-12462	coverage & exploitation status	NVD · CVE.org
CVE-2026-12458	coverage & exploitation status	NVD · CVE.org
CVE-2026-12445	coverage & exploitation status	NVD · CVE.org
CVE-2026-12466	coverage & exploitation status	NVD · CVE.org
CVE-2026-12459	coverage & exploitation status	NVD · CVE.org
CVE-2026-12452	coverage & exploitation status	NVD · CVE.org
CVE-2026-12441	coverage & exploitation status	NVD · CVE.org
CVE-2026-12468	coverage & exploitation status	NVD · CVE.org
CVE-2026-12456	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.

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