Skip to main content
CVE-2025-40778VulnerabilityPublished Updated

Red Hat Security Advisory: bind9.16 security update

Affects Red Hat bind9.16Source GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2025-40778· High 8.6

Not known to be exploited · CVSS 8.6 High · fixed in Red Hat package updates : patch Red Hat bind soon.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.20.15
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubisc/bindpkg:github/isc/bindOther threatsAffected
  • >=9.11.0 <=9.16.50
  • 9.18.0 <=9.18.39
  • 9.20.0 <=9.20.13
  • 9.21.0 <=9.21.12
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A security update upgrading BIND to version 9.20.15 is available and should be applied to affected systems. Red Hat has published updated packages for Red Hat Enterprise Linux 8 and related variants. Users should follow the vendor's official update instructions at https://access.redhat.com/articles/11258. Patch status is confirmed as available and remediation is official-fix. No additional mitigation steps are indicated beyond applying the update.

Description

Multiple security vulnerabilities in BIND 9.18 and related versions have been fixed in the 9.20.15 release. These include cache poisoning attacks via unsolicited resource records and weak pseudo-random number generation, as well as resource exhaustion caused by malformed DNSKEY handling. The update also includes various bug fixes, new features, and deprecations. Red Hat has issued an important security advisory with updated packages for affected Red Hat Enterprise Linux 8 variants.

References

Community reviews

Loading reviews…