CVE Watch15 jul 2026

CVE-2026-5946

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CH

CVSS

7.5

Alto

EPSS

1.8%

p76

KEV

—

Exploit Today

0-100

Publicado: 20 may 2026 · Última mod.: 15 jul 2026 · CWE-20 · CWE-125 · CWE-617

EPSS · 30d

1.8%EPSS · 30 días1.8%

2026-06-302026-07-16

Descripción técnica

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 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, 9.11.3-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.

Referencias oficiales

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