Vulnerability · Published Nov 3, 2025 · Assigned by Proofpoint
CVE-2025-8558
Low 2.3
In plain English
A low-severity missing authentication in Insider Threat Management (ITM) Server from Proofpoint. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Official description
Insider Threat Management (ITM) Server versions prior to 7.17.2 contain an authentication bypass vulnerability that allows unauthenticated users on an adjacent network to perform agent unregistration when the number of registered agents exceeds the licensed limit. Successful exploitation prevents the server from receiving new events from affected agents, resulting in a partial loss of integrity and availability with no impact to confidentiality.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Proofpoint | Insider Threat Management (ITM) Server | 0 – before 7.17.2 |
Weakness: CWE-306 · Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N