Medium [CVE-2026-19941] DNS wildcard record existence can be masked by an attacker via inapplicable NSEC records
This medium-severity Red Hat Linux advisory covers CVE-2026-19941; related products: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7.
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Summary
DNS wildcard record existence can be masked by an attacker via inapplicable NSEC records. Red Hat rates this moderate (CVSS 5.9).
Weakness: CWE-346. Red Hat lists fixing advisory RHSA-2026:68279 with package bind-main-9.20.29-0.1.hum1.
Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 4 more.
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: bind9.16; Red Hat package: bind9.18.
- 9.11.0
- 9.18.50
- 9.20.0
- 9.20.27
- 9.21.0
- 9.21.25
- 9.11.3
- 9.20.9
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
- bind-main-9.20.29-0.1.hum1
- RHSA-2026:68279
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
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