CVE-2026-4541

janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verification

LOW
2.5
CVSS Score
Published: March 22, 2026 at 08:35 AM UTC
Updated: June 17, 2026 at 10:56 AM UTC
1 product affected across 1 vendorTinyssh

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Severity
LOW2.5
Exploit prediction
EPSS 0.1%
SSVC
PoC

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. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 20260301 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.5LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-347CWE-345

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