# CVE-2026-46673: rust-russh-cryptovec: Russh is a Rust SSH client & server library

CVE-2026-46673 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-46673, released June 10, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-46673
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 10, 2026

## Description

Russh is a Rust SSH client & server library. Prior to version 0.60.3, CryptoVec used unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking paths. In current russh releases, local SSH agent peers could still feed attacker-controlled frame lengths into buffer growth before validation. In older russh releases before 0.58.0, remote SSH traffic also reached CryptoVec through transport and compression buffers. This issue has been patched in version 0.60.3.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | rust-russh Debian 14 | 0.64.1-1 | [DEBIAN-CVE-2026-46673](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46673.md) | Jun 10, 2026 |
| Linux | rust-russh-cryptovec Debian 14 | 0.62.0-1 | [DEBIAN-CVE-2026-46673](https://patchblox.com/security/data/fix/linux/debian-cve-2026-46673.md) | Jun 10, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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