CVE-2025-40775
published 2025-05-21CVE-2025-40775: 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…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
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.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | bind9 | < bind9 1:9.20.9-1 (forky) | bind9 1:9.20.9-1 (forky) |
| isc | bind | >= 0 < 9.18.37-r0 | 9.18.37-r0 |
| isc | bind | >= 0 < 9.18.37-r0 | 9.18.37-r0 |
| isc | bind | >= 0 < 9.18.37-r0 | 9.18.37-r0 |
| isc | bind | >= 0 < 9.18.37-r0 | 9.18.37-r0 |
| isc | bind | >= 0 < 9.20.9-r0 | 9.20.9-r0 |
| isc | bind | >= 0 < 9.20.9-r0 | 9.20.9-r0 |
| isc | bind9 | >= 0 < 1:9.20.9-1 | 1:9.20.9-1 |
| isc | bind9 | >= 0 < 1:9.20.9-1 | 1:9.20.9-1 |
| isc | bind_9 | 9.20.0 – 9.20.8 | — |
| isc | bind_9 | 9.21.0 – 9.21.7 | — |
| msrc | azl3_bind_9.20.5-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_bind_9.20.9-1_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH