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CVE-2026-64304: crypto: qat - validate RSA CRT component lengths

highCVSS 7.8CVE-2026-64304

CSIRTS triage

Other
What
The vulnerability relates to the validation of RSA CRT component lengths in the crypto qat module.
Who is affected
Deployments using the crypto qat module are affected.
Urgency
Remediation is necessary to prevent potential cryptographic issues.
Action
Update the crypto qat module to validate RSA CRT component lengths.

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

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.8
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64304

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-2026-64304coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for crypto

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.

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