vulnerability
Red Hat: CVE-2025-40780: bind: Cache poisoning due to weak PRNG (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:C/A:N) | Oct 22, 2025 | Nov 6, 2025 | Mar 18, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:C/A:N)
Published
Oct 22, 2025
Added
Nov 6, 2025
Modified
Mar 18, 2026
Description
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.
Solutions
redhat-upgrade-bindredhat-upgrade-bind-chrootredhat-upgrade-bind-debuginforedhat-upgrade-bind-debugsourceredhat-upgrade-bind-develredhat-upgrade-bind-dnssec-docredhat-upgrade-bind-dnssec-utilsredhat-upgrade-bind-dnssec-utils-debuginforedhat-upgrade-bind-docredhat-upgrade-bind-libsredhat-upgrade-bind-libs-debuginforedhat-upgrade-bind-licenseredhat-upgrade-bind-utilsredhat-upgrade-bind-utils-debuginforedhat-upgrade-bind9-16redhat-upgrade-bind9-16-chrootredhat-upgrade-bind9-16-debuginforedhat-upgrade-bind9-16-debugsourceredhat-upgrade-bind9-16-develredhat-upgrade-bind9-16-dnssec-utilsredhat-upgrade-bind9-16-dnssec-utils-debuginforedhat-upgrade-bind9-16-docredhat-upgrade-bind9-16-libsredhat-upgrade-bind9-16-libs-debuginforedhat-upgrade-bind9-16-licenseredhat-upgrade-bind9-16-utilsredhat-upgrade-bind9-16-utils-debuginforedhat-upgrade-bind9-18redhat-upgrade-bind9-18-chrootredhat-upgrade-bind9-18-debuginforedhat-upgrade-bind9-18-debugsourceredhat-upgrade-bind9-18-develredhat-upgrade-bind9-18-dnssec-utilsredhat-upgrade-bind9-18-dnssec-utils-debuginforedhat-upgrade-bind9-18-docredhat-upgrade-bind9-18-libsredhat-upgrade-bind9-18-libs-debuginforedhat-upgrade-bind9-18-utilsredhat-upgrade-bind9-18-utils-debuginforedhat-upgrade-python3-bindredhat-upgrade-python3-bind9-16
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