CVE-2026-6368: wordexp with WRDE_APPEND can return or use invalid memory

unknownCVE-2026-6368

CSIRTS triage

vendor: glibc product: glibc Memory corruption

What: The wordexp function with WRDE_APPEND flag can return or use invalid memory, leading to memory safety violations.
Who is affected: All systems using glibc's wordexp function with WRDE_APPEND in untrusted contexts.
Urgency: Severity unspecified but memory corruption is critical; prioritize patching.
Action: Update glibc to the patched version addressing CVE-2026-6368.

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: unknown
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6368

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-2026-63680.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-6368	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 wordexp with WRDE_APPEND

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-2026-6368: Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the…nvd · 2026-08-10