CVE-2026-56289: Loop with Unreachable Exit Condition in GNU patch

unknownCVE-2026-56289

CSIRTS triage

vendor: GNU product: patchOther

What: There is a loop with an unreachable exit condition in GNU patch.
Who is affected: Users of GNU patch are affected.
Urgency: Remediation urgency is unclear due to unknown severity and no exploitation reported.
Action: Monitor for updates regarding this issue.

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-2026-56289

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-2026-562890.11% 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-2026-56289	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 Loop with Unreachable

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.

highCVE-2026-43871: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Apache Thrift Python, …nvd · 2026-07-27
highCVE-2026-50647: Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services…nvd · 2026-07-14
mediumCVE-2026-50324: Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services…nvd · 2026-07-14
highCVE-2026-54119: Loop with unreachable exit condition ('infinite loop') in Windows Active Directory allows an u…nvd · 2026-07-14
highCVE-2026-50653: Loop with unreachable exit condition ('infinite loop') in Azure Active Directory allows an una…nvd · 2026-07-14
mediumCVE-2026-54886: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Erlang OTP ssh (ssh_sf…nvd · 2026-07-02