What is CVE-2026-5946?

CVE-2026-5946 is a high-severity vulnerability in Isc Bind, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-05-20.

How severe is CVE-2026-5946?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Isc Bind

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, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question secti…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (21.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Isc Bind
Isc Bind 9 — versions 9.11.0, 9.18.0, 9.20.0

Weakness classification (CWE)

References

security-officer@isc.org (Patch, patch)
security-officer@isc.org (Patch, patch)
security-officer@isc.org (Patch, patch)
security-officer@isc.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-5946?: CVE-2026-5946 is a high-severity vulnerability in Isc Bind, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-05-20.
How severe is CVE-2026-5946?: High severity. CVSS v3 base score is 7.5 out of 10.