[NEW] [medium] Microsoft Edge: Vulnerability Enables Code Execution

mediumCVE-2026-70339

A remote, anonymous attacker can exploit a vulnerability in Microsoft Edge to execute arbitrary code.

CSIRTS triage

vendor: Microsoft product: Edge Remote code execution

What: A code execution vulnerability allows remote anonymous attackers to execute arbitrary code.
Who is affected: All users of Microsoft Edge are exposed to remote exploitation.
Urgency: High priority due to remote code execution capability affecting all Edge users without authentication.
Action: Update Microsoft Edge to the latest patched version immediately.

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: 2026-08-12
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-2026-2796

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-2026-703390.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-70339	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 Multiple Vulnerabilitieshkcert · 2026-08-17
highCVE-2026-72970: Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker …nvd · 2026-08-14
unknownMultiple vulnerabilities in Microsoft Edge (August 12, 2026)cert-fr-avis · 2026-08-12
mediumCVE-2026-70339: Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-base…nvd · 2026-08-11
mediumCVE-2026-70339: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerabilitymsrc · 2026-08-11
highCVE-2026-72970: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerabilitymsrc · 2026-08-11