CVE-2025-40775 — DNS message with invalid TSIG causes an assertion failure
When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immedia…
Published: 2025-05-21 · CVSS: 7.5 · CVSS 3.1
When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7