CVE-2025-40780
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.6
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- EPSS probability
- 0.46%
- CWE
- CWE-341
- Published
- 2025-10-22
- Last modified
- 2026-03-12
Affected products
- ISC BIND 9
- ISC BIND 9
- ISC BIND 9
- ISC BIND 9
- ISC BIND 9
- ISC BIND 9
- ISC BIND 9
Weakness type
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