CVE-2021-22159 json
Insider Threat Management Windows Agent Local Privilege Escalation Vulnerability The Proofpoint Insider Threat Management (formerly Observe…
published 2021-01-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9306
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
Insider Threat Management Windows Agent Local Privilege Escalation Vulnerability The Proofpoint Insider Threat Management (formerly ObserveIT) Agent for Windows before 7.4.3, 7.5.4, 7.6.5, 7.7.5, 7.8.4, 7.9.3, 7.10.2, and 7.11.0.25 as well as versions 7.3 and earlier is missing authentication for a critical function, which allows a local authenticated Windows user to run arbitrary commands with the privileges of the Windows SYSTEM user. Agents for MacOS, Linux, and ITM Cloud are not affected.
Patch / fix
- proofpoint insider_threat_management 7.4.3, 7.5.4, 7.6.5, 7.7.5, 7.8.4, 7.9.3, 7.10.2, 7.11.0.25
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
proofpoint.com
/us/security/security-advisories
vendor-advisory
-
proofpoint.com
/us/security/security-advisories/pfpt-sa-2021-0001
vendor-advisory
Sources
- CVE List CVE-2021-22159
- NVD CVE-2021-22159
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.