Stack-based buffer overflow in the Phonetic Indexer (AvidPhoneticIndexer.exe) in Avid Media Composer 5.5.3 and earlier allows remote attackers to execute arbitrary code via a long request to TCP port 4659.
Conclusion & alert: CVE-2011-5003 is rated High Exploit Risk (88.5/100): CVSS Critical severity, with high exploitation likelihood (EPSS 75.67%, 99th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 18183 | exploit_db | edb | 2011-12-01 | Exploit-DB ↗ |
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 | 2026-04-13 | 76.83% | 75.67% | -1.15% |
| 2 | 2026-02-13 | 73.34% | 76.83% | +3.49% |
| 3 | 2026-01-29 | — | 73.34% | — |
Full EPSS history (21 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| avid | media_composer | <= 5.5.3 | cpe:2.3:a:avid:media_composer:*:*:*:*:*:*:*:* |