What is CVE-2026-40079?

CVE-2026-40079 is a critical-severity vulnerability in Cacti, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-25.

How severe is CVE-2026-40079?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Cacti

CVE-2026-40079

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Command Injection due to lack of sanitization in the escape_command() function. The escape_command() function at lib/rrd.php is…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.009 (55.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cacti — versions < 1.2.31

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40079?: CVE-2026-40079 is a critical-severity vulnerability in Cacti, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-25.
How severe is CVE-2026-40079?: Critical severity. CVSS v3 base score is 9.8 out of 10.