CVE-2026-4541
janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verification
Vexday Risk Score
8Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 2EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
22 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
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https://github.com/janmojzis/tinyssh/https://github.com/janmojzis/tinyssh/commit/9c87269607e0d7d20174df742accc49c042cff17https://github.com/janmojzis/tinyssh/issues/101https://github.com/janmojzis/tinyssh/issues/101#issue-3983586116https://github.com/janmojzis/tinyssh/pull/102https://github.com/janmojzis/tinyssh/releases/tag/20260301https://vuldb.com/submit/774687https://vuldb.com/vuln/352358https://vuldb.com/vuln/352358/cti