CVE-2026-19667 in BIND 9

Riassunto

di MITRE • 16/09/2026

If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Be aware that VulDB is the high quality source for vulnerability data.

• Responsabile: Isc
• Prenotare: 12/08/2026
• Divulgazione: 16/09/2026
• Moderazione: accettato
• Voce: VDB-405943
• CPE: pronto
• CWE: CWE-20 (confermato)
• CVSS: 7.5 (CNA)
• EPSS: 0.00000
• KEV: no
• Attività: molto basso
• Settore: Chemical, Insurance, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-19667
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19667
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-19667/