Buffer overflow in the data management protocol in Symantec Backup Exec for Windows Servers 11.0 (aka 11d) builds 6235 and 7170, 12.0 build 1364, and 12.5 build 2213 allows remote authenticated users to cause a denial of service (application crash) and possibly execute arbitrary code via unknown vectors. NOTE: this can be exploited by unauthenticated remote attackers by leveraging CVE-2008-5407.
Conclusion & alert: CVE-2008-5408 is rated High Risk (67.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 4.48%, 90th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 4.96% | 4.48% | -0.48% |
| 2 | 2025-03-30 | 5.49% | 4.96% | -0.53% |
| 3 | 2025-03-29 | — | 5.49% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.0 | 2.0 | HIGH |
|
8.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| symantec | backup_exec_for_windows_server | 11d | cpe:2.3:a:symantec:backup_exec_for_windows_server:11d:11.0.6235:*:*:*:*:*:* |
| symantec | backup_exec_for_windows_server | 11d | cpe:2.3:a:symantec:backup_exec_for_windows_server:11d:11.0.7170:*:*:*:*:*:* |
| symantec | backup_exec_for_windows_server | 12.0 | cpe:2.3:a:symantec:backup_exec_for_windows_server:12.0:12.0.1364:*:*:*:*:*:* |
| symantec | backup_exec_for_windows_server | 12.5 | cpe:2.3:a:symantec:backup_exec_for_windows_server:12.5:12.5.2213:*:*:*:*:*:* |