VULNERABILITY INTELLIGENCE

CVE-2023-5770

CVSS score5.3 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2024-01-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

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.

Weakness classification

  • security@proofpoint.com: CWE-838
  • nvd@nist.gov: CWE-838

Primary references