ISC Product Security Update Advisory (CVE-2025-40779)

Overview

 

We have released security updates to fix vulnerabilities in ISC products. Users of affected products are advised to update to the latest version.
 

 

Affected Products

 

CVE-2025-40779

 

Kea DHCP Version: 2.7.1 and later 2.7.9
Kea DHCP Version : 3.0.0
Kea DHCP Version: 3.1.0

 

 

Resolved Vulnerabilities

 

Denial of Service Vulnerability in Kea DHCP (CVE-2025-40779)

 

 

Vulnerability Patches

Vulnerability Patches have been made available in the latest update. Please follow the instructions on the Referenced Sites to update to the latest Vulnerability Patches version.

 

CVE-2025-40779

 

Kea DHCP Version: 3.0.1
Kea DHCP Version: 3.1.1

 

 

References

 

[1] CVE-2025-40779: Kea crash upon interaction between specific client options and subnet selection
https://kb.isc.org/docs/cve-2025-40779