Alerts This Week
Warning Icon 1 485
Alerts This Week
Warning Icon 1 485

Ubuntu 26.04 24.04 Socat Critical Remote Execution Local File Overwrite

ubuntu
Calendar Grey July 6, 2026
Dist Ubuntu Esm H88
Discover critical updates to socat on Ubuntu, addressing both remote code execution and local file overwrite issues. Act now!
Several security issues were fixed in socat.

Summary

Several security issues were fixed in socat.

Software Description:

- socat: multipurpose relay for bidirectional data transfer

Details:

It was discovered that socat incorrectly handled the SOCKS5 proxy server

reply parser. A remote attacker could possibly use this issue to execute

arbitrary code. (CVE-2026-56123)

It was discovered that socat incorrectly handled a sample script. A local

attacker could possibly use this issue to overwrite arbitrary files. This

issue only affected Ubuntu 24.04 LTS. (CVE-2024-54661)

Topics%20covered

Topics Covered

security advisory critical remote code execution Ubuntu local file overwrite socat

Update Instructions

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

Ubuntu 26.04 LTS
  socat                           1.8.1.1-1ubuntu0.1

Ubuntu 24.04 LTS
  socat                           1.8.0.0-4ubuntu0.1

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

References

https://ubuntu.com/security/notices/USN-8511-1

CVE-2024-54661, CVE-2026-56123

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8511-1

Topics%20covered

Topics Covered

security advisory critical remote code execution Ubuntu local file overwrite socat

Package Information

https://launchpad.net/ubuntu/+source/socat/1.8.1.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/socat/1.8.0.0-4ubuntu0.1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here