Threshold Network Pauses tBTC Minting and Redemption Amid Security Measures

ChainCatcher report: According to Threshold Network, tBTC minting and redemption are temporarily paused. Sufficient assets remain to back the tokens, and no funds have been lost. The cross-chain bridge wallet holds approximately 4,320 BTC, while the circulating supply of tBTC is around 4,185 BTC. No unauthorized minting or Bitcoin transfers have been detected. In response to the recently disclosed Linux kernel vulnerability CVE-2026-98432—which could allow attackers to execute remote code on unpatched servers—all tBTC node operators have either patched their servers or temporarily shut down their nodes pending the release of a fix. The team has found no evidence that this vulnerability has been exploited to attack tBTC nodes. Additionally, one node operator reported a separate security incident unrelated to the kernel vulnerability, resulting in approximately 0.5 ETH being withdrawn from their Ethereum account used to pay transaction fees. At the time, the node was offline, and there is no evidence that signature key materials were accessed. Threshold Network emphasizes that Bitcoin transactions from the tBTC wallet require signatures from a majority of independent operators; no single operator can move funds alone. The cross-chain bridge will reopen once security maintenance is complete and nodes are restored on patched systems. The team will provide the next update within 24 hours and will issue an earlier update if circumstances change.