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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-73429 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/Eugeny/russh/commit/a7fc1eb5717264e31c3c5f7dd849b73989a08f3d GitHub, Inc.
https://github.com/Eugeny/russh/releases/tag/v0.62.4 GitHub, Inc.
https://github.com/Eugeny/russh/security/advisories/GHSA-g9hv-x236-4qp3 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-704 Incorrect Type Conversion or Cast GitHub, Inc.  
CWE-754 Improper Check for Unusual or Exceptional Conditions GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-73429
NVD Published Date:
08/12/2026
NVD Last Modified:
08/12/2026
Source:
GitHub, Inc.