OCTOBER 13, 2026
Live Feed
Back to database
Case File

CVE-2026-19667

HIGH · CVSS 7.5 EPSS 0.57%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

A vulnerability in the `named` component of BIND allows an attacker-controlled authoritative server to exploit a flaw that results in a negative cache entry of 0 bytes when a specific negative answer of 65536 bytes is produced. This can lead to an unexpected abort of the `named` service, potentially disrupting DNS resolution. Organizations using affected versions of BIND 9 should prioritize patching to mitigate this high-severity risk.

CVE
CVE-2026-19667
Severity
HIGH
CVSS
7.5
EPSS
0.57%

Original NVD Description

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.