CVE-2026-16277: Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()

mediumCVSS 6.5CVE-2026-16277

CSIRTS triage

vendor: rpcbind product: rpcbind Memory corruption

What: A stack buffer overflow exists in the rpcinfo rpcbaddrlist() function.
Who is affected: Deployments using rpcbind.
Urgency: Medium urgency due to a CVSS score of 6.5 indicating moderate severity.
Action: Update rpcbind to the latest version 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 6.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-16277

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-2026-162770.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-16277	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

mediumCVE-2026-16277: A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote r…nvd

Recent advisories for Rpcbind

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-2026-16461: A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode…nvd · 2026-07-21
mediumCVE-2026-16277: A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote r…nvd · 2026-07-20
mediumCVE-2026-16461: Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatti…msrc · 2026-07-14