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VulnerabilityPublished Updated

CVE-2025-40778: bind security update

Affects bindSource GCVE Database

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Authoritative record:CVE-2025-40778· High 8.6

Not known to be exploited · CVSS 8.6 High : upgrade to 32:9.11.36-16.el8_10.6 soon.

Data as of 4 Nov 2026, 18:41 UTC

CVSS 3.1 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 32:9.11.36-16.el8_10.6
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. Weaponized: 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 4 Nov 2026.

What to do

Upgrade the AlmaLinux to 32:9.11.36-16.el8_10.6.

Affected software

ProductAffectedFixed in
AlmaLinux 8bindAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6
AlmaLinux 8bind-chrootAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6
AlmaLinux 8bind-develAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6
AlmaLinux 8bind-export-develAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6
AlmaLinux 8bind-export-libsAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6
AlmaLinux 8bind-libsAffected
  • <32:9.11.36-16.el8_10.6
Fixed in
  • 32:9.11.36-16.el8_10.6

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 fixing this vulnerability is available and should be applied. Red Hat Enterprise Linux 8 users should update BIND to version 9.11.36-16.el8_10.6 or later. Refer to the Red Hat advisory and update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps.

Description

A security vulnerability in the Berkeley Internet Name Domain (BIND) DNS software allows cache poisoning attacks via unsolicited resource records (RRs). This issue is identified as CVE-2025-40778. The vulnerability affects versions of BIND prior to 9.11.36-16.el8_10.6. A security update addressing this issue has been released by Red Hat for their Enterprise Linux 8 distributions.

References

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