CVE-2026-13321
Last modified
CVE-2026-13321 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Isc | Bind | >= 9.11.0, <= 9.18.50 |
| Isc | Bind | >= 9.11.3, <= 9.18.50 |
| Isc | Bind | >= 9.20.0, <= 9.20.24 |
| Isc | Bind | >= 9.20.9, <= 9.20.24 |
| Isc | Bind | >= 9.21.0, <= 9.21.23 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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