CVE-2026-13757: P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing

mediumCVSS 6.2CVE-2026-13757

CSIRTS triage

vendor: P11-kit product: p11-kitOther

What: There is a stack exhaustion vulnerability due to unbounded recursion in RPC attribute parsing.
Who is affected: Deployments of p11-kit that utilize RPC attribute parsing are affected.
Urgency: Remediation is medium priority due to moderate severity and lack of known exploitation.
Action: Update to the latest version of p11-kit to mitigate this vulnerability.

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 6.2
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-13757

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-2026-137570.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-13757	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

mediumCVE-2026-13757: A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_a…nvd

Recent advisories for P11-kit

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.

mediumCVE-2026-13757: A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_a…nvd · 2026-06-29