๐Ÿ›ก๏ธ CVE-2026-5946
๐ŸŸ  CVSS 7.5 โ€” High โœ… No Known Exploit CWE-20 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) โ€” 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 โ€” recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data โ€” 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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-20
Public Exploit โœ… No
Source NVD
Published 2026-05-20
Updated 2026-06-02
Modified 2026-05-21

Affected Packages

Software From version Fixed in
bind 9.21.0 9.21.22
unknown โ€” โ€”

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