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Ubuntu 16.04 LTS: GnuPG Critical Remote Code Exec Vulnerability USN-7946-2

ubuntu
Calendar Grey January 8, 2026
Dist Ubuntu Esm H88
GnuPG vulnerable to specially crafted traffic, causing crashes or code execution on Ubuntu 14.04 and 16.04 LTS.
GnuPG could be made to crash or run programs if it received specially crafted network traffic.

Summary

GnuPG could be made to crash or run programs if it received

specially crafted network traffic.

Software Description:

- gnupg: GNU privacy guard - a free PGP replacement

Details:

USN-7946-1 fixed vulnerabilities in GnuPG 2.x.

This update provides the corresponding updates for GnuPG 1.x.

Original advisory details:

It was discovered that GnuPG incorrectly handled crafted input.

A remote attacker could possibly use this issue to crash the program,

or execute arbitrary code.

Topics%20covered

Topics Covered

security advisory gnupg critical remote code execution Ubuntu network traffic

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS
  gnupg                           1.4.20-1ubuntu3.3+esm3
                                  Available with Ubuntu Pro
  gpgv                            1.4.20-1ubuntu3.3+esm3
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  gnupg                           1.4.16-1ubuntu2.6+esm2
                                  Available with Ubuntu Pro
  gpgv                            1.4.16-1ubuntu2.6+esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7946-2

https://ubuntu.com/security/notices/USN-7946-1

CVE-2025-68973

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7946-2

Topics%20covered

Topics Covered

security advisory gnupg critical remote code execution Ubuntu network traffic

Package Information

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