CVE-2025-54321: In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an…

CVE-2025-54321 · Severity: critical · CVSS 9.8 · Published 2025-11-18

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.

Technologies: Ascertia Signinghub. Vendors: Ascertia.

Quick answers

Is CVE-2025-54321 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-54321 being exploited in the wild.
How severe is CVE-2025-54321?
Critical severity, with a CVSS score of 9.8, published 18 November 2025.
Which products and versions are affected?
Ascertia Signinghub. The advisory does not name versions.
Is there a fix for CVE-2025-54321?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-54321?
Check whether you run Ascertia Signinghub. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Ascertia Signinghub

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