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[NEW] [high] Insyde UEFI Firmware (InsydeH2O): Vulnerability enables Code Execution

highCVE-2026-6484
A local attacker can exploit a vulnerability in Insyde UEFI Firmware to execute arbitrary code.

CSIRTS triage

vendor: Insydeproduct: Insyde UEFI Firmware (InsydeH2O)Remote code execution
What
A vulnerability in Insyde UEFI firmware allows local attackers to execute arbitrary code.
Who is affected
Systems with Insyde firmware are affected if attackers gain local access.
Urgency
High priority; firmware-level code execution is difficult to remediate and impacts system security.
Action
Apply firmware updates from device manufacturers using Insyde UEFI firmware.

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
high
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-2026-2777

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-6484coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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