What is CVE-2018-6603?

CVE-2018-6603 is a medium-severity vulnerability in Promise Webpam Proe, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.1/10. Published 2018-02-07.

How severe is CVE-2018-6603?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Promise Webpam Proe

CVE-2018-6603

Promise Technology WebPam Pro-E devices allow remote attackers to conduct XSS, HTTP Response Splitting, and CRLF Injection attacks via JavaScript code in a PHPSESSID cookie.

Published 2018-02-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Promise Webpam Proe

Weakness classification (CWE)

References

dfdrconsulting.com/cve-2018-6603-promise-technology-webpam-pro-e-http-response-… (Third Party Advisory)

Frequently asked questions

What is CVE-2018-6603?: CVE-2018-6603 is a medium-severity vulnerability in Promise Webpam Proe, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.1/10. Published 2018-02-07.
How severe is CVE-2018-6603?: Medium severity. CVSS v3 base score is 6.1 out of 10.