Reachable Assertion Affecting pdns-recursor package, versions [5.3.0-alpha0,5.3.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-PDNSRECURSOR-14241652
- published9 Dec 2025
- disclosed9 Dec 2025
- creditUnknown
Introduced: 9 Dec 2025
CVE-2025-59029 (opens in a new tab)How to fix?
Upgrade pdns-recursor to version 5.3.3 or higher.
Overview
Affected versions of this package are vulnerable to Reachable Assertion via the cache management process. An attacker can cause a service disruption by sending specially crafted DNS record requests, allowing them to be inserted into the cache, and subsequently issuing a query with the qtype parameter set to ANY.
Workaround
This vulnerability can be avoided by blocking all requests with qtype of ANY.