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CVE-2026-12480: Arbitrary HDF5 File Read via Virtual Dataset Bypass in keras-team/keras

mediumCVSS 5.5CVE-2026-12480

CSIRTS triage

What
An arbitrary HDF5 file read vulnerability via virtual dataset bypass has been identified.
Who is affected
Users of keras are affected.
Urgency
Remediation is medium priority due to moderate severity.
Action
Review and apply relevant updates when available.

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

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 5.5
Published
2026-07-02
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-12480

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-2026-12480coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Arbitrary HDF5 File

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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