CVE-2025-64457 is a vulnerability identified in JetBrains' developer tools: ReSharper, Rider, and dotTrace, affecting versions prior to 2025.2.5. The root cause is a TOCTOU race condition (CWE-367), a class of bugs where a system checks a condition and then uses a resource based on that check, but the state changes between these two operations. This race condition can be exploited by a local attacker with limited privileges to escalate their privileges on the host system. The attack complexity is high because it requires precise timing to exploit the race condition. The vulnerability does not require user interaction but does require local access and some level of privileges (low privileges). The CVSS v3.1 base score is 4.2, reflecting medium severity, with impact on confidentiality and integrity but no impact on availability. The scope is changed, indicating that the vulnerability affects resources beyond the initially vulnerable component. No public exploits are known at this time, and no patch links have been provided, though JetBrains has reserved the CVE and published the advisory. This vulnerability is significant for developers and organizations relying on these JetBrains tools on their local development environments, as it could allow attackers to gain elevated privileges and potentially compromise development workflows or local systems.

The primary impact of CVE-2025-64457 is local privilege escalation, which can allow an attacker with limited access to gain higher privileges on the affected system. This can lead to unauthorized access to sensitive development files, modification of source code, or installation of persistent backdoors within development environments. The confidentiality and integrity of local development environments are at risk, potentially undermining software supply chain security if attackers manipulate code or build processes. Although the vulnerability does not affect availability, the elevated privileges could facilitate further attacks or lateral movement within an organization’s network. Organizations with large developer teams or those using JetBrains tools extensively are at higher risk, as compromised developer machines can become entry points for broader attacks. The lack of known exploits currently reduces immediate risk, but the presence of a race condition vulnerability with local privilege escalation potential warrants prompt attention.

Organizations should monitor JetBrains’ official channels for the release of patches addressing CVE-2025-64457 and apply updates to ReSharper, Rider, and dotTrace promptly once available. Until patches are released, restricting local access to developer machines and enforcing strict access controls can reduce the risk of exploitation. Employing endpoint detection and response (EDR) solutions to monitor for suspicious privilege escalation attempts is advisable. Developers should avoid running these tools with elevated privileges unnecessarily. Additionally, implementing application whitelisting and least privilege principles on developer workstations can limit the impact of potential exploitation. Regular audits of local user permissions and system integrity checks can help detect unauthorized changes resulting from exploitation attempts. Finally, educating developers about the risks of local privilege escalation and encouraging vigilance around suspicious system behavior will aid in early detection and response.