What is CVE-2025-55903?

CVE-2025-55903 is a high-severity vulnerability in N/a, classified under Improper Encoding or Escaping of Output. CVSS score: 8.3/10. Published 2025-10-10.

How severe is CVE-2025-55903?

High severity. CVSS v3 base score is 8.3 out of 10.

Is CVE-2025-55903 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in N/a

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.

EPSS: 0.003 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-55903?: CVE-2025-55903 is a high-severity vulnerability in N/a, classified under Improper Encoding or Escaping of Output. CVSS score: 8.3/10. Published 2025-10-10.
How severe is CVE-2025-55903?: High severity. CVSS v3 base score is 8.3 out of 10.
Is CVE-2025-55903 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.