NRDAX-T0139 - Legacy Sighash Quadratic CPU Blowup

compute_amp · active · first seen 2026-07-01

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

CVE-2025-46598: non-standard tx with many legacy-sighash inputs → quadratic validation CPU, no peer penalty

instances (1)

chain	primitive	fidelity	origin	reproducer (bundle)	source
bitcoin	btc_tx_quad_sighash	lab	reverse-engineered-cve	btc_tx_quad_sighash	https://bitcoincore.org/en/2025/10/24/disclose-cve-2025-46598/ ↗

related (compute_amp)

NRDAX-T0005 - Array Deserialization Memcpy Corruption active NRDAX-T0006 - Async Runtime Blocking VM Execution active NRDAX-T0013 - Bloom Filter Divide-By-Zero Crash active NRDAX-T0076 - Expensive Debug RPC Compute Amplification active NRDAX-T0101 - Handshake Crypto Validation Bypass Crash active NRDAX-T0122 - Integer Signedness Index OOB Crash active NRDAX-T0129 - Invalid Curve Point Panic active NRDAX-T0148 - Malformed KZG Proof Mismatch DoS active

cite

https://nrdax.com/techniques/NRDAX-T0139

plain

NRDAX Registry. Technique NRDAX-T0139.

bibtex

@misc{nrdax_NRDAX_T0139,
  title = {Legacy Sighash Quadratic CPU Blowup (NRDAX-T0139)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0139},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0139",
  "type": "dataset",
  "title": "Legacy Sighash Quadratic CPU Blowup (NRDAX-T0139)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0139",
  "publisher": "NRDAX Registry"
}