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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.

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.
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

Red Hat has released updated bind9.16 packages in Red Hat Enterprise Linux 8.8.7 that address these vulnerabilities. Users should apply the official security update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No additional mitigation steps are indicated beyond applying the update.

Description

Red Hat has issued a security advisory for BIND 9.16 addressing two cache poisoning vulnerabilities. These vulnerabilities involve attacks using unsolicited resource records and weaknesses due to a weak pseudo-random number generator (PRNG). The affected versions are Red Hat Enterprise Linux 8.8 prior to 8.8.7. The update fixes these issues to prevent potential DNS cache poisoning attacks.

References

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