CVE-2025-54321 Denial of service in n/a
An authenticated attacker can cause email bombing by automating reset password requests due to missing rate limiting in Ascertia SigningHub.
- 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-2025-54321?
CVE-2025-54321 is a critical denial of service vulnerability in n/a, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an email bombing vulnerability. An authenticated attacker can exploit this by automating reset password requests.
Weakness: CWE-799
Which versions are affected by CVE-2025-54321?
It affects 1 product.
Products include Ascertia Signinghub.
How do I fix CVE-2025-54321?
No fix has been published for CVE-2025-54321 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-54321 being exploited?
There is no known exploitation of CVE-2025-54321 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-79qg-7g83-cmf7.