CVE-2025-54321
Ascertia SigningHub Email Bombing Vulnerability
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.
INFO
Published Date :
Nov. 18, 2025, 7:15 p.m.
Last Modified :
Nov. 20, 2025, 7 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Implement rate limiting on password reset requests.
- Monitor password reset attempts for unusual activity.
- Validate user input during password reset process.
Public PoC/Exploit Available at Github
CVE-2025-54321 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-54321.
| URL | Resource |
|---|---|
| https://github.com/saykino/CVE-2025-54321 | Third Party Advisory |
| https://www.ascertia.com/company/vulnerability-disclosure-policy/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-54321 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-54321
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-54321 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-54321 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Nov. 20, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:* versions up to (including) 8.6.8 Added Reference Type MITRE: https://github.com/saykino/CVE-2025-54321 Types: Third Party Advisory Added Reference Type MITRE: https://www.ascertia.com/company/vulnerability-disclosure-policy/ Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 19, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-799 -
New CVE Received by [email protected]
Nov. 18, 2025
Action Type Old Value New Value Added 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. Added Reference https://github.com/saykino/CVE-2025-54321 Added Reference https://www.ascertia.com/company/vulnerability-disclosure-policy/