CVE-2026-56288: NULL Pointer Dereference in GNU patch

unknownCVE-2026-56288

CSIRTS triage

product: GNU patchOther

What: A NULL Pointer Dereference vulnerability exists.
Who is affected: Deployments of GNU patch are affected.
Urgency: Remediation is important due to the potential for application crashes.
Action: Update to the latest version of GNU patch 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: unknown
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56288

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-2026-562880.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-56288	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 NULL Pointer Dereference

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-2026-65367: A null pointer dereference was addressed with improved input validation. This issue is fixed i…nvd · 2026-08-25
mediumCVE-2026-48429: Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could resu…nvd · 2026-08-25
highCVE-2026-24263: NVIDIA DGX Spark contains a vulnerability in the system firmware, where a privileged attacker …nvd · 2026-08-25
highCVE-2023-54354: Nokogiri before 1.14.3 (CRuby implementation only, when using the packaged libxml2) bundles li…nvd · 2026-08-25
highCVE-2026-71922: Multiple DrayTek VigorSwitch models contain a pre-authentication null pointer dereference vuln…nvd · 2026-08-24
mediumCVE-2026-71920: Multiple DrayTek VigorSwitch models contain a null pointer dereference vulnerability in the fo…nvd · 2026-08-24