{"apiVersion":"1.0","identifier":"CVE-2026-73429","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.","publishedAt":"2026-08-12T21:17:41","lastModifiedAt":"2026-08-14T23:16:33","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73429","cvssScore":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","epssProbability":0.00291,"riskScore":0.54,"affectedProduct":"Russh","affectedVersions":"<0.62.4","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73429","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73429","en":"https://www.redsauce.net/en/cves/CVE-2026-73429","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73429","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73429","de":"https://www.redsauce.net/de/cves/CVE-2026-73429","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73429","el":"https://www.redsauce.net/el/cves/CVE-2026-73429"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73429"}}