Solc version used (known-bug versions flagged)
USDD (Decentralized USD)'s assessment for RD-F-170 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
Ethereum canonical ERC-20 (0x4f8e5de400de08b164e7421b3ee387f461becd1a): Solidity v0.6.12+commit.27d51765, EVM version Istanbul, optimization 200 runs. Etherscan solcbuginfo confirms no critical or high severity bugs active in 0.6.12 (all high-severity bugs were fixed before this version). However, 0.6.12 is an older, EOL Solidity version (0.8.x is current supported series). TRON primary: TVM compiler version unassessable (Tronscan-blocked). Yellow: older EOL Solidity version but no critical active bugs for this contract type.
Sources #
- URLEtherscan Solidity Compiler Bug Information DatabaseEtherscan Solidity compiler bug database - 0.6.12 has no critical bugsretrieved 2026-05-17
- Usdd Stablecoin source - Etherscan compiler metadataUSDD Ethereum ERC-20 compiler: v0.6.12+commit.27d51765, Istanbul, optimization 200 runsretrieved 2026-05-17
Methodology #
Identify the Solidity compiler version used for deployed bytecode and flag if it appears on the known-bug list (solc bugs.json or Vyper 0.2.15–0.3.0 range).
See the full factor methodology and distribution across all protocols →