CVE-2026-40209
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PowerDNS | DNSdist | 1.9.0 < 1.9.15 | affected |
| PowerDNS | DNSdist | 2.0.0 < 2.0.7 | affected |
Weaknesses
- Missing Release of Resource after Effective Lifetime
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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