CVE-2026-46600: Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.

highCVSS 7.5CVE-2026-46600

Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-21
Last updated: 2026-07-23
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/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

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

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

Recent advisories for Parsing an invalid

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-2026-13182: In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload client-state processing…nvd · 2026-07-22
highCVE-2026-46600: Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessagemsrc · 2026-07-14
mediumCVE-2026-15712: Soupclientmessageiohttp2: libsoup3: libsoup: http/2 goaway frame parsing heap buffer over-read…msrc · 2026-07-14