Multiple cross-site scripting (XSS) vulnerabilities in PHP scripts in the management console on Symantec Web Gateway (SWG) appliances with software before 5.2.2 DB 5.0.0.1277 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors, as demonstrated an attack against admin_messages.php.
Conclusion & alert: CVE-2015-5691 is rated Moderate Risk (46.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.17%). Core evidence: EPSS rose +1.64% over the last day, indicating growing attacker interest. 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 | 0.53% | 2.17% | +1.64% |
| 2 | 2025-06-16 | 1.44% | 0.53% | -0.91% |
| 3 | 2025-03-30 | — | 1.44% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| symantec | web_gateway | <= 5.2.2 | cpe:2.3:a:symantec:web_gateway:*:*:*:*:*:*:*:* |