How severe is CVE-2025-56224?

CVE-2025-56224 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-56224 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-56224?

CVE-2025-56224 affects Ascertia Signinghub. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-56224?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-56224 have an EU (EUVD) identifier?

Yes. CVE-2025-56224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35049.

When was CVE-2025-56224 published?

CVE-2025-56224 was published on 2025-10-20 and last updated on 2026-07-05.

CVE-2025-56224

CVE-2025-56224 is a high-severity vulnerability in Ascertia Signinghub with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35049
Weakness: CWE-307
Affected product: Ascertia Signinghub
Published: 2025-10-20
Last modified: 2026-07-05

Description

A lack of rate limiting in the One-Time Password (OTP) verification endpoint of SigningHub v8.6.8 allows attackers to bypass verification via a bruteforce attack.

Frequently asked questions

What is CVE-2025-56224?: A lack of rate limiting in the One-Time Password (OTP) verification endpoint of SigningHub v8.6.8 allows attackers to bypass verification via a bruteforce attack.
How severe is CVE-2025-56224?: CVE-2025-56224 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-56224 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-56224?: CVE-2025-56224 affects Ascertia Signinghub. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-56224?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-56224 have an EU (EUVD) identifier?: Yes. CVE-2025-56224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35049.
When was CVE-2025-56224 published?: CVE-2025-56224 was published on 2025-10-20 and last updated on 2026-07-05.

References

https://github.com/saykino/CVE-2025-56224

EU advisories (EUVD)

Affected products (1)

cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:*

More vulnerabilities in Ascertia Signinghub

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