Return of Stack Variable Address Affecting bind package, versions [9.20.0,9.20.21)[9.21.0,9.21.20)
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-BIND-15812205
- published29 Mar 2026
- disclosed25 Mar 2026
- creditUnknown
Introduced: 25 Mar 2026
CVE-2026-3591 (opens in a new tab)How to fix?
Upgrade bind to version 9.20.21, 9.21.20 or higher.
Overview
Affected versions of this package are vulnerable to Return of Stack Variable Address in the SIG(0) handling process. An attacker can gain unauthorized access by sending specially crafted DNS requests that cause access control lists to improperly match IP addresses.