CVE detail
CVE-2026-13321
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 3
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://kb.isc.org/docs/cve-2026-13321kb.isc.org
No excerpt available.
Vendor Advisorykb.isc.orgJul 22, 2026, 3:16 PM - https://downloads.isc.org/isc/bind9/9.21.24downloads.isc.org
No excerpt available.
Patchdownloads.isc.orgJul 22, 2026, 3:16 PM - https://downloads.isc.org/isc/bind9/9.20.26downloads.isc.org
No excerpt available.
Patchdownloads.isc.orgJul 22, 2026, 3:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
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