CVE-2026-52686
Multiple vulnerabilities have been discovered in PDNS Recursor, a resolving name server, which could result in cache poisoning or DNSSEC validation bypass. https://security-tracker.debian.org/tracker/DSA-6397-1
CSIRTS triage
- What
- Multiple vulnerabilities in PDNS Recursor could result in cache poisoning or DNSSEC validation bypass.
- Who is affected
- Deployments of PDNS Recursor.
- Urgency
- Remediation urgency is unknown due to unspecified severity.
- Action
- Apply the latest security updates for PDNS Recursor.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (2)
- lowCVE-2026-52686: The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) a…nvd · 2026-07-23
- unknownDSA-6397-1 pdns-recursor - security updatedebian · 2026-07-23
External references
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