Use After Free Affecting bind package, versions [9.20.0,9.20.23)[9.21.0,9.21.22)
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-16874106
- published25 May 2026
- disclosed20 May 2026
- creditNaresh Kandula Parmar
Introduced: 20 May 2026
CVE-2026-3593 (opens in a new tab)How to fix?
Upgrade bind to version 9.20.23, 9.21.22 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the DNS-over-HTTPS process. An attacker can cause memory corruption or potentially execute arbitrary code by sending specially crafted DNS-over-HTTPS requests. This is only exploitable if DNS-over-HTTPS is enabled.
Workaround
This vulnerability can be mitigated by disabling DNS-over-HTTPS.