BIND DNS Servers Hit by 14 Security Flaws Enabling Cache Poisoning and Remote Crashes
ISC patched 14 high-severity BIND 9 flaws enabling DNS cache poisoning, DNSSEC bypass, and remote crashes of exposed recursive resolvers.
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CVE-2025-40775
- CVSS 3.1
- 7.5 high
- EPSS
- 15%p97
- Published
- ·
- Modified
Description · NVD
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.
- Weakness
- CWE-232
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H