# CVE-2026-4541: tinyssh: A flaw has been found in janmojzis tinyssh up to 20250501

CVE-2026-4541 is fixed in tinyssh on 1 platform by DEBIAN-CVE-2026-4541 (version 20260301-1), released March 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-4541
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0008
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 22, 2026

## Description

A flaw has been found in janmojzis tinyssh up to 20250501. Impacted is an unknown function of the file tinyssh/crypto_sign_ed25519_tinyssh.c of the component Ed25519 Signature Handler. This manipulation causes improper verification of cryptographic signature. The attack is restricted to local execution. The attack's complexity is rated as high. The exploitability is considered difficult. The exploit has been published and may be used. Upgrading to version 20260301 is recommended to address this issue. Patch name: 9c87269607e0d7d20174df742accc49c042cff17. Upgrading the affected component is recommended.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tinyssh Debian 14 | 20260301-1 | [DEBIAN-CVE-2026-4541](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4541.md) | Mar 22, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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