CVE-2025-55903Public exploitNetwork attack vector

Authenticated HTML injection via unescaped estimate address

Published Oct 10, 2025 · Updated Oct 10, 2025

HTML injection in Perfex CRM 3.3.1 allows remote authenticated users to alter client-facing estimates through the Bill To address field. The estimate module stores the supplied address and renders it in client-facing documents without HTML sanitization or output escaping. Low-privilege network access is required; injected markup can change document content, while script execution is not established by the record.

CVSS severity8.3
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

HTML injection in Perfex CRM 3.3.1 allows remote authenticated users to alter client-facing estimates through the Bill To address field. The estimate module stores the supplied address and renders it in client-facing documents without HTML sanitization or output escaping. Low-privilege network access is required; injected markup can change document content, while script execution is not established by the record.

The record

CVE
CVE-2025-55903
Published
Oct 10, 2025
Updated
Oct 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-116
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo