CVE-2023-5770

moderate-risk
Published 2024-01-09

Proofpoint Enterprise Protection contains a vulnerability in the email delivery agent that allows an unauthenticated attacker to inject improperly encoded HTML into the email body of a message through the email subject. The vulnerability is caused by inappropriate encoding when rewriting the email before delivery.This issue affects Proofpoint Enterprise Protection: from 8.20.2 before patch 4809, from 8.20.0 before patch 4805, from 8.18.6 before patch 4804 and all other prior versions.

Do I need to act?

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0.22% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (3)

Enterprise Protection
Enterprise Protection
Enterprise Protection

Affected Vendors

Proofpoint

References (2)

Vendor Advisory https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0009
Vendor Advisory https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0009
31
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 1/34 · Minimal
Exposure 9/34 · Low