{"id":"CVE-2026-73429","revision":"328b82de3c4d49c99645108f68cb5c2f","records":[{"revision":"328b82de3c4d49c99645108f68cb5c2f","observedAt":"2026-10-25T15:19:09.409+00:00","statement":{"source":"nvd","id":"CVE-2026-73429","aliases":[],"title":"Russh is a Rust SSH client & server library. Prior to 0.62.4, a malicious SSH server can crash a russh client session with a malformed KEX_ECDH_REPLY containing a server ephemeral value that is not 32 bytes long. The client-side Curve25519K…","description":"Russh is a Rust SSH client & server library. Prior to 0.62.4, a malicious SSH server can crash a russh client session with a malformed KEX_ECDH_REPLY containing a server ephemeral value that is not 32 bytes long. The client-side Curve25519Kex::compute_shared_secret function in russh/src/kex/curve25519.rs passes the decoded exchange.server_ephemeral value to clone_from_slice without validating its length, causing a deterministic panic before the server host key is verified. The panic terminates the spawned client session task and surfaces as a JoinError, while the embedding process normally remains running. This issue is fixed in version 0.62.4.","state":0,"publishedAt":"2026-08-12T21:17:41.75+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/Eugeny/russh/commit/a7fc1eb5717264e31c3c5f7dd849b73989a08f3d","https://github.com/Eugeny/russh/releases/tag/v0.62.4","https://github.com/Eugeny/russh/security/advisories/GHSA-g9hv-x236-4qp3"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73429","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-704","CWE-754"],"productCriteria":[],"sourceDates":{"published":"2026-08-12T21:17:41.750","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-73429","identifiers":["CVE-2026-73429"]},"retained":false,"historicalAffected":[]}],"coverage":[]}