How severe is CVE-2025-55903?

CVE-2025-55903 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-55903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-55903?

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-2025-55903 have an EU (EUVD) identifier?

Yes. CVE-2025-55903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33769.

When was CVE-2025-55903 published?

CVE-2025-55903 was published on 2025-10-10 and last updated on 2026-06-17.

CVE-2025-55903

CVE-2025-55903 is a high-severity vulnerability with a CVSS 3.x base score of 8.3. 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-116.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-33769
Weakness: CWE-116
Published: 2025-10-10
Last modified: 2026-06-17

Description

A HTML injection vulnerability exists in Perfex CRM v3.3.1. The application fails to sanitize user input in the "Bill To" address field within the estimate module. As a result, arbitrary HTML can be injected and rendered unescaped in client-facing documents.

Frequently asked questions

What is CVE-2025-55903?: A HTML injection vulnerability exists in Perfex CRM v3.3.1. The application fails to sanitize user input in the "Bill To" address field within the estimate module. As a result, arbitrary HTML can be injected and rendered unescaped in client-facing documents.
How severe is CVE-2025-55903?: CVE-2025-55903 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-55903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-55903?: 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-2025-55903 have an EU (EUVD) identifier?: Yes. CVE-2025-55903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33769.
When was CVE-2025-55903 published?: CVE-2025-55903 was published on 2025-10-10 and last updated on 2026-06-17.

References

Other CWE-116 vulnerabilities

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