CVE-2025-62514 - `libparsec_crypto` does not check for weak order point of curve 25519

CVE-2025-62514 - `libparsec_crypto` does not check for weak order point of curve 25519

https://cvefeed.io/rssfeed/latest.atom / Thu, 01/29/2026 - 19:59
CVE ID : CVE-2025-62514
Published : Jan. 29, 2026, 4:16 p.m. | 1 hour ago
Description : Parsec is a cloud-based application for cryptographically secure file sharing. In versions on the 3.x branch prior to 3.6.0, `libparsec_crypto`, a component of the Parsec application, does not check for weak order point of Curve25519 when compiled with its RustCrypto backend. In practice this means an attacker in a man-in-the-middle position would be able to provide weak order points to both parties in the Diffie-Hellman exchange, resulting in a high probability to for both parties to obtain the same shared key (hence leading to a successful SAS code exchange, misleading both parties into thinking no MITM has occurred) which is also known by the attacker. Note only Parsec web is impacted (as Parsec desktop uses `libparsec_crypto` with the libsodium backend). Version 3.6.0 of Parsec patches the issue.
Severity: 8.3 | HIGH
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