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[USN-9062-1] SNMPTT vulnerability

Posted on 12 November 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-9062-1
November 11, 2026

snmptt vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

SNMPTT could be made to run programs if it received specially crafted
network traffic.

Software Description:
- snmptt: SNMP trap handler for use with snmptrapd

Details:

It was discovered that SNMPTT did not properly sanitize trap data passed to
commands run through the EXEC, PREEXEC, and unknown_trap_exec options. A
remote attacker could possibly use this issue to execute arbitrary shell
commands.

Update instructions:

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

Ubuntu 20.04 LTS
snmptt 1.4-2ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
snmptt 1.4-1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
snmptt 1.4-1ubuntu0.16.04.1~esm1
Available with Ubuntu Pro

After a standard system update you need to restart SNMPTT to make all the
necessary changes.

References:
https://ubuntu.com/security/notices/USN-9062-1
CVE-2020-24361

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