CVE-2026-4541

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.08% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 0.2% of scored records. A rank, not a probability.

NVD base score

1.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-22 08:35Z7 MO AGO

Last updated

2026-04-18 03:39Z6 MO AGO

Reserved

2026-03-21

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Low (CVSS 2.0)

CNA CVSS 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

Weaknesses

• CWE-345Insufficient Verification of Data AuthenticityClass
• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.2

Document digest

0e552123123e9ccd3dd031180e7d112c22088c0a90fbb83e2e50a9373309ded9

• vuldb.comVDB-352358 | janmojzis tinyssh Ed25519 Signature crypto_sign_ed25519_tinyssh.c signature verificationhttps://vuldb.com/vuln/352358vdb-entry
• vuldb.comVDB-352358 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/352358/ctisignaturepermissions-required
• vuldb.comSubmit #774687 | GitHub tinyssh 20250501 Cryptographic Issueshttps://vuldb.com/submit/774687third-party-advisory
• github.comhttps://github.com/janmojzis/tinyssh/issues/101issue-tracking
• github.comhttps://github.com/janmojzis/tinyssh/pull/102issue-trackingpatch
• github.comhttps://github.com/janmojzis/tinyssh/issues/101#issue-3983586116exploitissue-tracking
• github.comhttps://github.com/janmojzis/tinyssh/commit/9c87269607e0d7d20174df742accc49c042cff17patch
• github.comhttps://github.com/janmojzis/tinyssh/releases/tag/20260301patch
• github.comhttps://github.com/janmojzis/tinyssh/product