CVE-2026-3039
highpriority · track · 0EPSS 0.011 · 65 %ileDEEURUUSEPSS · scored 2026-10-27
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (61)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1626Internet Systems Consortium BIND: Mehrere SchwachstellenDeutsch2026-05-20csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Internet Systems Consortium BIND ausnutzen, um eine Speicherbeschädigung auszulösen oder einen Denial-of-Service-Zustand zu verursachen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (26)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-3039cnnvd
- https://kb.isc.org/docs/cve-2026-3039Patchcnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-3039cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-3039cnnvd
- https://downloads.isc.org/isc/bind9/9.18.49enisa_euvd
- https://downloads.isc.org/isc/bind9/9.20.23enisa_euvd
- https://downloads.isc.org/isc/bind9/9.21.22enisa_euvd
- https://kb.isc.org/docs/cve-2026-3039enisa_euvd
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