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CVE-2021-31608

18
FAUCET Score

CVE-2021-31608 is a security control bypass vulnerability affecting Proofpoint Enterprise Protection versions prior to 18.8.0. Rated as Medium severity (CVSS 4.3), it can be exploited remotely with low attack complexity, requiring user interaction, and primarily impacts integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
< 18.8.0CPE matchmatch criteria
cpe:2.3:a:proofpoint:enterprise_protection:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 36th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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/security/security-advisories/pfpt-sa-2021-0011
Vendor Advisory