What’s Vulnerable › Vulnerabilities

CVE-2020-8884

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-06 · updated 2026-06-17
• Weakness: CWE-502

Description

rcdsvc in the Proofpoint Insider Threat Management Windows Agent (formerly ObserveIT Windows Agent) before 7.9 allows remote authenticated users to execute arbitrary code as SYSTEM because of improper deserialization over named pipes.

Affected products

• Proofpoint Insider Threat Management: from 6.3 before 7.4.2; from 7.5.0 before 7.5.3; from 7.6.0 before 7.6.4; from 7.7.0 before 7.7.4; from 7.8.0 before 7.8.3 — fixed in 7.4.2, 7.5.3, 7.6.4, 7.7.4, 7.8.3

How to fix

Upgrade to a fixed version: Proofpoint Insider Threat Management 7.4.2, 7.5.3, 7.6.4, 7.7.4. Check the vendor advisory for mitigations.

References

• https://www.proofpoint.com/us/blog
• https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2020-0002
• https://www.proofpoint.com/us/blog
• https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2020-0002

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