Is CVE-2023-5770 actively exploited?

CVE-2023-5770 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2023-5770?

CVE-2023-5770 has a CVSS score of 5.3 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

How do I patch CVE-2023-5770?

Patch guidance is available from proofpoint security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-5770.

CVE-2023-5770 - remediation guidance & executive summary

Q: Which products are affected by CVE-2023-5770?

3 products: proofpoint enterprise protection, proofpoint enterprise protection, proofpoint enterprise protection.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
Weaknesses: CWE-838 CWE-838

Metadata

Primary Vendor: PROOFPOINT
Published: 1/9/2024
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

proofpoint : enterprise_protectionproofpoint : enterprise_protectionproofpoint : enterprise_protection

Remediation Guidance

Executive Summary

Cite this page

CVE-2023-5770. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-5770

View on NIST NVD

CVE-2023-5770 vulnerability