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High severity8.8NVD Advisory· Published Dec 2, 2025· Updated Jun 17, 2026

CVE-2025-66399

CVE-2025-66399

Description

Cacti is an open source performance and fault management framework. Prior to 1.2.29, there is an input-validation flaw in the SNMP device configuration functionality. An authenticated Cacti user can supply crafted SNMP community strings containing control characters (including newlines) that are accepted, stored verbatim in the database, and later embedded into backend SNMP operations. In environments where downstream SNMP tooling or wrappers interpret newline-separated tokens as command boundaries, this can lead to unintended command execution with the privileges of the Cacti process. This vulnerability is fixed in 1.2.29.

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Affected products

3
  • Cacti (software)/Cactiv53 versions
    < 1.2.29+ 2 more
    • (no CPE)range: < 1.2.29
    • cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*range: <1.2.29
    • (no CPE)range: <1.2.29

Patches

Vulnerability mechanics

References

1

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