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Ubuntu 25.10 NNCP Important File Access Threat USN-8359-1

ubuntu
Calendar Grey June 1, 2026
Dist Ubuntu Esm H88
NNCP flaw in Ubuntu allows unauthorized file access. Update to protect against potential remote attacks now.
NNCP could allow unintended access to files.

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.

Topics%20covered

Topics Covered

security advisory remote attack Ubuntu important file access nncp

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

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8359-1

Topics%20covered

Topics Covered

security advisory remote attack Ubuntu important file access nncp

Package Information

https://launchpad.net/ubuntu/+source/nncp/8.11.0-4+deb13u1build0.25.10.1

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