Microsoft Office 2013 and 2013 RT allows remote attackers to discover authentication tokens via a crafted response to a file-open request for an Office file on a web site, as exploited in the wild in 2013, aka "Token Hijacking Vulnerability."
Conclusion & alert: CVE-2013-5054 is rated Moderate Risk (52.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.77%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.35% over the last day, indicating growing attacker interest. 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 | 11.42% | 12.77% | +1.35% |
| 2 | 2025-03-30 | 15.77% | 11.42% | -4.35% |
| 3 | 2025-03-29 | — | 15.77% | — |
Full EPSS history (9 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] |