CVE-2026-53336: nvmem: layouts: onie-tlv: fix hang on unknown types

mediumCVSS 5.5CVE-2026-53336

CSIRTS triage

product: nvmem Denial of service

What: This vulnerability can cause a hang on unknown types in nvmem layouts.
Who is affected: Users of nvmem layouts that may encounter unknown types.
Urgency: Remediation is important as it has a medium severity and could disrupt service.
Action: Apply the fix for CVE-2026-53336.

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-2026-53336

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-2026-533360.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53336	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 nvmem

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.

unknownCVE-2026-53336: In the Linux kernel, the following vulnerability has been resolved: nvmem: layouts: onie-tlv: …nvd · 2026-07-01
mediumCVE-2026-53156: nvmem: core: fix use-after-free bugs in error pathsmsrc · 2026-06-09