CVE-2026-4541janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verification
Updated under an hour ago ()
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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
- 2.5 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-347, CWE-345
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Apr 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
janmojzis tinyssh janmojzis:tinyssh (from the name) | 20250501; 20260301 not affected | CNA record |
References
- https://vuldb.com/vuln/352358vdb-entry
- https://vuldb.com/vuln/352358/ctisignature, permissions-required
- https://vuldb.com/submit/774687third-party-advisory
- https://github.com/janmojzis/tinyssh/issues/101issue-tracking
- https://github.com/janmojzis/tinyssh/pull/102issue-tracking, patch
- https://github.com/janmojzis/tinyssh/issues/101#issue-3983586116exploit, issue-tracking
- https://github.com/janmojzis/tinyssh/commit/9c87269607e0d7d20174df742accc49c042cff17patch
- https://github.com/janmojzis/tinyssh/releases/tag/20260301patch
- https://github.com/janmojzis/tinyssh/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.