CVE-2026-12617: Record ordering based unexpected exit with CNAME or DNAME

highCVSS 7.5CVE-2026-12617

CSIRTS triage

vendor: golang.org product: x/textOther

What: Unexpected exit can occur due to record ordering with CNAME or DNAME.
Who is affected: Users of the golang.org/x/text package.
Urgency: Remediation is high priority due to the high severity rating of 7.5.
Action: Update to the latest version of golang.org/x/text to resolve 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: high — CVSS 7.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-12617

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-2026-126170.49% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-12617	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 Record ordering based

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-2026-12617: The issue is unexpected program termination based on ordering and/or specific content in respo…nvd · 2026-07-22