CVE-2025-0431 Enterprise Protection Backslash URL Rewrite Bypass
Unauthenticated attackers can bypass URL rewriting protections in Proofpoint Enterprise Protection by exploiting improper backslash filtering in emails.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-0431?
CVE-2025-0431 is a medium-severity vulnerability in Proofpoint Enterprise Protection, published on 19 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-790
Which versions are affected by CVE-2025-0431?
How do I fix CVE-2025-0431?
No fix has been published for CVE-2025-0431 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-0431 being exploited?
There is no known exploitation of CVE-2025-0431 in the wild and no public exploit code.
Sources
Also known as GHSA-hqgf-xpw9-m8hc.