========================================================================== Ubuntu Security Notice USN-8359-1 June 01, 2026
nncp vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
NNCP could allow unintended access to files.
Software Description:
- nncp: package facilitating secure store-and-forward file and mail exchange
Details:
It was discovered that NNCP did not properly sanitize file paths
in packet data during file requesting and file saving operations. A
remote attacker could possibly use this issue to read or write
arbitrary files outside of the intended directory.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
nncp 8.11.0-4+deb13u1build0.25.10.1
Ubuntu 24.04 LTS
nncp 8.10.0-8ubuntu0.3+esm3
Available with Ubuntu Pro
Ubuntu 22.04 LTS
nncp 8.5.0-1ubuntu0.1+esm3
Available with Ubuntu Pro
In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-8359-1
CVE-2025-60020
Package Information:
https://launchpad.net/ubuntu/+source/nncp/8.11.0-4+deb13u1build0.25.10.1
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