8.2
High
CVE-2026-19401 Any remote client can crash a (debugging/non-release build type) NSD serve child by sending it a special crafted message…
Description
Any remote client can crash a (debugging/non-release build type) NSD serve child by sending it a special crafted message with a specially tuned number of DNS Cookie options (17 when UDP payload size is 512). By continuously crashing the serve childs, the remote client can severely hamper or, when positioned sufficiently close, deny all DNS service.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| NSD 4.3 | 4.3.7 → < 4.15.1 | 4.15.1 |
References
- www.nlnetlabs.nl www.nlnetlabs.nl
Timeline
- Published
- Last modified
Other CVEs of NSD
The 13 CVEs of NSD →
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8.7
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CVE-2026-101339
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8.7
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CVE-2026-101338
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8.7
High
CVE-2026-101337
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8.7
High