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CVE-2026-94300 is a memory-corruption vulnerability in ISC BIND 9's named process involving concurrent GSS-TSIG message processing. An attacker can replay a previously captured GSS-TSIG-signed UDP message while its negotiated TSIG key remains valid, causing memory corruption and potentially a process abort. Combining replay with crafted queries involving an attacker-controlled zone may enable remote code execution. Affected standard releases are 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, and 9.21.0 through 9.21.26. Affected Supported Preview Edition releases are 9.11.3-S1 through 9.18.50-S1 and 9.20.9-S1 through 9.20.29-S1.
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A memory corruption vulnerability involving concurrent GSS-TSIG messages. The content provides no affected product, exploitation details, or remediation information.
An Internet-exploitable vulnerability in BIND's handling of replayed GSS-TSIG-signed UDP packets, rated CVSS 8.1. Replaying an intercepted packet while its negotiated TSIG key remains valid causes vulnerable servers to process it as new, resulting in memory errors. Additional crafted queries to an attacker-controlled zone can potentially enable remote code execution. Affected versions are 9.11.0–9.18.50, 9.20.0–9.20.29, 9.21.0–9.21.26, and Supported Preview Edition versions 9.11.3-S1–9.18.50-S1 and 9.20.9-S1–9.20.29-S1. Fixed releases are 9.20.30, 9.21.27, and 9.20.30-S1. Maintainers report no known active exploitation and no workarounds.
A vulnerability affecting BIND 9 packages in Debian 13 (trixie), cited as the source of the plugin's high-severity scoring, including a CVSS v3 base score of 8.1. The advisory collectively describes denial of service or remote code execution without identifying this CVE's specific mechanism. Fixed in version 1:9.20.30-1~deb13u1.
A memory-corruption vulnerability in ISC BIND triggered by concurrent GSS-TSIG messages. The notice does not specify further impacts or exploitation requirements.
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