Heap-based Buffer Overflow Affecting unbound package, versions [1.6.2,1.25.1)
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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- published26 May 2026
- disclosed26 May 2026
- creditAndrew Griffiths
Introduced: 26 May 2026
CVE-2026-32792 (opens in a new tab)How to fix?
Upgrade unbound to version 1.25.1 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the DNSCrypt process. An attacker can cause the service to crash by sending a specially crafted DNSCrypt query that triggers a heap overflow. This is only exploitable if the instance is compiled with DNSCrypt support and specific memory layouts are present, as subsequent packet checks may prevent successful exploitation.