CVE-2026-46600: Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage

highCVSS 7.5CVE-2026-46600

CSIRTS triage

vendor: Golang product: golang.org/x/netOther

What: Parsing an invalid SVCB or HTTPS resource record can cause a panic in the DNS message handling.
Who is affected: Deployments using the golang.org/x/net/dns/dnsmessage package may be affected.
Urgency: Remediation is urgent due to the high severity and potential for application crashes.
Action: Update to the latest version of the golang.org/x/net package.

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-2026-46600

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-2026-466000.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-46600	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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