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CVE-2020-10656

29
FAUCET Score

CVE-2020-10656 affects Proofpoint Insider Threat Management Server (formerly ObserveIT Server) versions prior to 7.9.1, stemming from improper deserialization in the ITM application server's WriteWindowMouseWithChunksV2 API. This critical vulnerability, with a CVSS score of 9.8, allows an anonymous remote attacker to execute arbitrary code with local administrator privileges, posing a severe risk to confidentiality, integrity, and availability. Despite its high severity and potential impact, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.9.1CPE matchmatch criteria
cpe:2.3:a:proofpoint:insider_threat_management_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 74th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

proofpoint.com / us/blog
Product
proofpoint.com / us/security/security-advisories/pfpt-sa-2020-0003
Vendor Advisory