CVE-2025-32352 Auth bypass in ZendTo
Remote attackers can bypass authentication in ZendTo by exploiting type confusion with MD5 password hashes, requiring an upgrade to fix.
- 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-2025-32352?
CVE-2025-32352 is a medium-severity authentication bypass vulnerability in ZendTo, published on 5 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A type confusion vulnerability in lib/NSSAuthenticator.php in ZendTo before v5.04-7 allows remote attackers to bypass authentication for users with passwords stored as MD5 hashes that can be interpreted as numbers. A solution requires moving from MD5 to bcrypt.
Weakness: CWE-843
Which versions are affected by CVE-2025-32352?
How do I fix CVE-2025-32352?
No fix has been published for CVE-2025-32352 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-32352 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-32352 exists.
Sources
Also known as GHSA-2xch-5969-phfh.