Heap-based buffer overflow in atas32.dll in the Cisco WebEx WRF Player 26.x before 26.49.32 (aka T26SP49EP32) for Windows, 27.x before 27.10.x (aka T27SP10) for Windows, 26.x before 26.49.35 for Mac OS X and Linux, and 27.x before 27.11.8 for Mac OS X and Linux allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a crafted WebEx Recording Format (WRF) file, a different vulnerability than CVE-2009-2878 and CVE-2009-2879.
Conclusion & alert: CVE-2009-2876 is rated High Risk (71.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.13%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.61% 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 | 2.52% | 5.13% | +2.61% |
| 2 | 2025-08-27 | 2.11% | 2.52% | +0.41% |
| 3 | 2025-03-30 | — | 2.11% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | webex | 26.00 | cpe:2.3:a:cisco:webex:26.00:*:linux:*:*:*:*:* |
| cisco | webex | 26.00 | cpe:2.3:a:cisco:webex:26.00:*:mac_os_x:*:*:*:*:* |
| cisco | webex | 26.00 | cpe:2.3:a:cisco:webex:26.00:*:windows:*:*:*:*:* |
| cisco | webex | 27.00 | cpe:2.3:a:cisco:webex:27.00:*:linux:*:*:*:*:* |
| cisco | webex | 27.00 | cpe:2.3:a:cisco:webex:27.00:*:mac_os_x:*:*:*:*:* |
| cisco | webex | 27.00 | cpe:2.3:a:cisco:webex:27.00:*:windows:*:*:*:*:* |