Improperly Implemented Security Check for Standard Affecting unbound package, versions [1.6.0,1.25.2)
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-UNBOUND-18507938
- published2 Aug 2026
- disclosed22 Jul 2026
- creditUnknown
Introduced: 22 Jul 2026
NewCVE-2026-46582 (opens in a new tab)How to fix?
Upgrade unbound to version 1.25.2 or higher.
Overview
Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard via the handling of expired DNSSEC records. An attacker can cause temporary misresolution of legitimate DNS records by injecting replayed wildcard DNSSEC data, leading to the caching of poisoned records and potential information disclosure. This is only exploitable if the serve-expired configuration option is enabled.
Workaround
This vulnerability can be mitigated by disabling the serve-expired feature in the configuration.