CVE-2025-62370 is a vulnerability classified under CWE-248 (Uncaught Exception) found in the alloy-rs core libraries, which are foundational to the Rust Ethereum ecosystem. The flaw exists in the alloy_dyn_abi::TypedData module, specifically in the eip712_signing_hash() function. When this function receives malformed input, it triggers an uncaught panic due to an attempt to access the first element of an empty collection without prior validation. This results in a denial-of-service (DoS) condition, as the panic crashes the process or thread handling the request. The vulnerability affects alloy-rs versions earlier than 0.8.26 and versions from 1.0.0 up to but not including 1.4.1. The patch introduced in version 0.8.26 and backported to 1.4.1 adds a check to ensure the element is not empty before access; if empty, an error is returned instead of panicking. This vulnerability does not impact confidentiality or integrity but severely affects availability, especially for network services relying on alloy-rs for Ethereum-related operations. External auto-restarting mechanisms can partially mitigate the impact by restarting crashed services, but repeated exploitation could cause persistent outages. No evidence of active exploitation in the wild has been reported as of the publication date. The CVSS v3.1 score is 7.5 (High), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability.

The primary impact of CVE-2025-62370 is denial-of-service, which can disrupt Ethereum-related services that depend on alloy-rs core libraries. For European organizations, this can affect blockchain infrastructure providers, decentralized finance (DeFi) platforms, cryptocurrency exchanges, and any network services implementing Ethereum smart contract interactions using alloy-rs. Service outages could lead to financial losses, reputational damage, and reduced trust from users and partners. Since the vulnerability does not affect confidentiality or integrity, data breaches or unauthorized modifications are unlikely. However, availability disruptions in critical blockchain services could have cascading effects on transaction processing and smart contract execution. Organizations with high availability requirements may experience significant operational challenges. The lack of required authentication or user interaction means attackers can remotely trigger the DoS, increasing the risk of widespread impact. European financial hubs and technology centers with active Ethereum development and deployment are particularly at risk.

European organizations should immediately identify and inventory all systems using alloy-rs core libraries, focusing on versions prior to 0.8.26 and between 1.0.0 and 1.4.1. The primary mitigation is to upgrade to alloy-rs version 0.8.26 or 1.4.1 and later, where the vulnerability is patched. In environments where immediate patching is not feasible, implement robust input validation and sanitization at the application layer to prevent malformed data from reaching the vulnerable function. Deploy monitoring to detect repeated panics or crashes related to eip712_signing_hash() usage. Utilize external auto-restarting mechanisms cautiously, ensuring they do not mask repeated exploitation attempts. Conduct thorough testing of Ethereum-related services after patching to confirm stability. Additionally, consider network-level protections such as rate limiting and anomaly detection to reduce the risk of automated DoS attempts exploiting this vulnerability. Maintain up-to-date threat intelligence feeds to monitor for any emerging exploits targeting this CVE.