cgi-bin/cgi-lib/instantmessage.pl in web-app.org WebAPP before 0.9.9.7 uses the From field of an instant message as the beginning of the .dat file name when the (1) imview2 or (2) imview3 function reads (a) an internal IM, or a message from a (b) guest or (c) removed member, which has unknown impact and remote attack vectors.
Conclusion & alert: CVE-2007-3423 is rated Moderate Risk (52.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.13%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.36% | 1.13% | +0.76% |
| 2 | 2025-07-21 | 0.33% | 0.36% | +0.03% |
| 3 | 2025-03-30 | — | 0.33% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| web-app.org | webapp | <= 0.9.9.6 | cpe:2.3:a:web-app.org:webapp:*:*:*:*:*:*:*:* |