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CRITICAL · 9.8

CVE-2025-56221

A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a brute force attack.

Vulnerability Description

A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a brute force attack.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AscertiaSigninghub<= 8.6.8

Related Weaknesses (CWE)

CWE-307

References

FAQ

What is CVE-2025-56221?

CVE-2025-56221 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a brute force attack.

How severe is CVE-2025-56221?

CVE-2025-56221 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-56221?

Check the references section above for vendor advisories and patch information. Affected products include: Ascertia Signinghub.