CVE-2026-42004
3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.
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
- Misinterpretation of Input
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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