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.
- Published
- Oct 17, 2025
- Updated
- Oct 17, 2025
- Assigning CNA
- mitre
- Evidence observed
- Aug 25, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 46.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a brute force attack.
Sources
1- CVE-2025-56221Informational
Advisory detailing CVE-2025-56221, an authentication rate-limiting flaw in Ascertia SigningHub allowing brute-force attacks, with affected versions and mitigation guidance.
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