CVE-2026-4541CWE-345CWE-347

janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verification

Low · published March 22, 2026

CVSS v4.0
2.0
EPSS
0%
Percentile
0.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
2.0 · LOW
Vector
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00087 · 0.3th percentile
Weaknesses
CWE-345 · Insufficient Verification of Data Authenticity; CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-03-22T08:35Z
EPSS history
Timeline
  • 22 MAR 08:35Z
    janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verification
    cvelistv5