Blockchain security firm CertiK has called on all OKX users on iPhone to update the iOS application after uncovering a critical security vulnerability earlier in December.

In a Dec. 19 post on X (formerly Twitter), CertiK told users of OKX wallets to update their iOS apps to the latest version immediately to avoid being exposed to a potential security flaw.

“Earlier this month, we identified and reported a critical Remote Code Execution (RCE) vulnerability in the OKX iOS App, leading to potential compromise of sensitive data and crypto assets,” the blockchain security firm added.

OKX said it fixed the issue with a “relevant upgrade” on Dec. 19 and prompted users to move to the iOS version 6.45.0. CertiK confirmed the security issue was resolved.

“We have verified that this did not impact any customer assets,” OKX added.

An RCE vulnerability enables an attacker to run malicious code on an organization’s computers or network, potentially resulting in stolen funds or data breaches.

OKX’s decentralized exchange, OKX DEX, suffered a $2.7 million hack on Dec. 13 after the private key of the proxy admin owner was reportedly leaked.

OKX is the 10th-ranked cryptocurrency exchange on CoinGecko’s “trust score” leaderboard for trading platforms, with a score of 9/10. OKX recently launched trading and wallet services in Brazil in late November.

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