Signal Handler Race Condition Affecting powerdns package, versions [4.7.0,4.9.15)[5.0.0-alpha0,5.0.5)
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-POWERDNS-16799834
- published22 May 2026
- disclosed21 May 2026
- creditUnknown
Introduced: 21 May 2026
CVE-2026-42002 (opens in a new tab)How to fix?
Upgrade powerdns to version 4.9.15, 5.0.5 or higher.
Overview
Affected versions of this package are vulnerable to Signal Handler Race Condition due to improper handling of concurrency and locking in the in-flight GSS-TSIG contexts. An attacker can cause a denial of service by exploiting race conditions that may lead to application instability or crashes.