
KaliBench: A Fine-Grained Benchmark for Cybersecurity Tool Use on Kali Linux with Runtime-Free Verifiable Rewards
KaliBench replaces knowledge-based or end-to-end agentic cybersecurity evaluation with fine-grained natural-language-to-CLI pairs (8,504 queries, 1,642 tools) and runtime-free verifiable rewards usable for SFT and RLVR. Adopting it costs building or reusing the dataset, canonicalization and alias-aware scoring infrastructure, and fine-tuning runs, though an 8B model with parameter-efficient methods fits a single 24 GB GPU; teams outside the cybersecurity domain gain nothing directly. It can fail through reward hacking of exact-match signals, overfitting to the benchmark's 1,642-tool distribution while real environments use different tool versions and flags, and commands that score correct but are unsafe or non-executable in a live sandbox.







































