OSED — OffSec Exploit Developer
OffSec's Windows exploit development certification covering user-mode exploit techniques — SEH overflows, DEP/ASLR bypasses, heap exploitation, and shellcode development. The 47h 45m practical exam genuinely requires the ability to develop custom exploits from scratch. Part of the OSCE³ composite pathway. Not DoD 8140 approved. One of the few certifications that validates actual vulnerability research and exploit development skill rather than just the ability to use existing tools — the most technically demanding aspect of offensive security.
| Issuer | OffSec |
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| Level | expert |
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| Domains | Offensive Security |
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| Practical weight | 100% |
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| Cost (USD) | 1749 |
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| Renewal | Does not expire (lifetime). Part of OSCE³ pathway |
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| Skills | exploit_development, shellcode_development, heap_exploitation, bypass_techniques, assembly_language_reading, debugger_usage, custom_exploit_development |
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Official certification page
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