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CVE-2026-39938criticalCWE-22CWE-78

Cacti: Unauthenticated RCE on Graph Image

48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.8epss 1.3%
from disclosure to weapon0 days
Published on NVDJun 24
1st PoCApr 4
exploitation probability
1.3%top 32% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have unauthenticated LFI through graph_theme and rrdtool IPC serialization hardening. This issue has been resolved in version 1.2.31.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Cacti · cacti
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.