Authentication Bypass in Insider Threat Management Server from Proofpoint
CVE-2025-8558

2.3LOW

Key Information:

Vendor

Proofpoint

Status
Insider Threat Management (itm) Server
Vendor
CVE Published:
3 November 2025

What is CVE-2025-8558?

The Insider Threat Management Server from Proofpoint has a vulnerability that allows unauthenticated users on an adjacent network to bypass authentication. This exploitation enables malicious actors to unregister agents when the number of registered agents exceeds the licensed limit. This results in a denial of service, preventing the server from processing new events from those affected agents, leading to a significant compromise of the system's integrity and availability while confidentiality remains intact.

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Affected Version(s)

Insider Threat Management (ITM) Server 0 < 7.17.2

References

https://www.proofpoint.com/us/security/security-advisorie...

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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