CVE-2026-53910: Heap-based Buffer Overflow in GNU diffutils

unknownCVE-2026-53910

CSIRTS triage

vendor: GNU product: diffutilsOther

What: Heap-based buffer overflow vulnerability exists.
Who is affected: Users of GNU diffutils.
Urgency: Remediation urgency is unknown due to lack of severity information.
Action: Monitor for updates or patches.

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-2026-53910

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-2026-539100.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53910	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownCVE-2026-53910: diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple si…nvd

Recent advisories for Heap-based Buffer Overflow

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-2026-13307: Autel MaxiCharger AC Elite Home USB Heap-based Buffer Overflow Arbitrary Code Execution Vulner…nvd · 2026-07-29
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highCVE-2026-48372: Format Plugins is affected by a Heap-based Buffer Overflow vulnerability that could result in …nvd · 2026-07-28
unknownCVE-2026-17572: Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 o…nvd · 2026-07-27
criticalCVE-2026-55971: Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings. This issue affects Apa…nvd · 2026-07-27
highCVE-2026-66374: Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in th…nvd · 2026-07-25