How severe is CVE-2025-61166?

CVE-2025-61166 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-61166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61166?

CVE-2025-61166 primarily affects Ascertia Signinghub. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-61166?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-61166 have an EU (EUVD) identifier?

Yes. CVE-2025-61166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209233.

When was CVE-2025-61166 published?

CVE-2025-61166 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2025-61166

CVE-2025-61166 is a medium-severity vulnerability in Ascertia Signinghub with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209233
Weakness: CWE-601
Affected product: Ascertia Signinghub
Published: 2026-04-06
Last modified: 2026-06-17

Description

An open redirect in Ascertia SigningHub User v10.0 allows attackers to redirect users to a malicious site via a crafted URL.

Frequently asked questions

What is CVE-2025-61166?: An open redirect in Ascertia SigningHub User v10.0 allows attackers to redirect users to a malicious site via a crafted URL.
How severe is CVE-2025-61166?: CVE-2025-61166 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-61166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61166?: CVE-2025-61166 primarily affects Ascertia Signinghub. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-61166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-61166 have an EU (EUVD) identifier?: Yes. CVE-2025-61166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209233.
When was CVE-2025-61166 published?: CVE-2025-61166 was published on 2026-04-06 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ascertia:signinghub:8.6.8:*:*:*:*:*:*:*
cpe:2.3:a:ascertia:signinghub:10.0:*:*:*:*:*:*:*

More vulnerabilities in Ascertia Signinghub

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CVE-2025-56224 — High (CVSS 8.1): A lack of rate limiting in the One-Time Password (OTP) verification endpoint of SigningHub v8.6.8 allows attackers to…
CVE-2025-56223 — High (CVSS 7.5): A lack of rate limiting in the component /Home/UploadStreamDocument of SigningHub v8.6.8 allows attackers to cause a…
CVE-2025-56219 — High (CVSS 7.1): Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user accounts without any rate…

All CVEs affecting Ascertia Signinghub →

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

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