CVE-2025-0431

Enterprise Protection Backslash URL Rewrite Bypass

Description

Enterprise Protection contains a vulnerability in URL rewriting that allows an unauthenticated remote attacker to send an email which bypasses URL protections impacting the integrity of recipient's email. This occurs due to improper filtering of backslashes within URLs and affects all versions of 8.21, 8.20 and 8.18 prior to 8.21.0 patch 5115, 8.20.6 patch 5114 and 8.18.6 patch 5113 respectively.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: Proofpoint Enterprise Protection
Published at:
Updated at:

References

Link Tags
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2025-0001

Frequently Asked Questions

What is the severity of CVE-2025-0431?
CVE-2025-0431 has been scored as a medium severity vulnerability.
How to fix CVE-2025-0431?
To fix CVE-2025-0431, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-0431 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-0431 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-0431?
CVE-2025-0431 affects Proofpoint Enterprise Protection.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.