{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-3706", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-3706", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-03-08T05:02:11.136Z", "updatedAt": "2026-04-22T18:54:11.224Z", "importedAt": "2026-10-24T01:58:08.712Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "mkj Dropbear S Range Check curve25519.c unpackneg signature verification", "summary": "A vulnerability was determined in mkj Dropbear up to 2025.89. Impacted is the function unpackneg of the file src/curve25519.c of the component S Range Check. This manipulation causes improper verification of cryptographic signature. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is considered difficult. The actual existence of this vulnerability is currently in question. Patch name: fdec3c90a15447bd538641d85e5a3e3ac981011d. To fix this issue, it is recommended to deploy a patch. The project maintainer explains: \"Signature Malleability is not exploitable in SSH protocol. (...) [A] PoC doesn't exist for SSH implementation, but rather it's against the internal API.\"", "affected": [ { "vendor": "mkj", "product": "Dropbear", "versions": [ { "version": "2025.0", "status": "affected" }, { "version": "2025.1", "status": "affected" }, { "version": "2025.2", "status": "affected" }, { "version": "2025.3", "status": "affected" }, { "version": "2025.4", "status": "affected" }, { "version": "2025.5", "status": "affected" }, { "version": "2025.6", "status": "affected" }, { "version": "2025.7", "status": "affected" }, { "version": "2025.8", "status": "affected" }, { "version": "2025.9", "status": "affected" }, { "version": "2025.10", "status": "affected" }, { "version": "2025.11", "status": "affected" }, { "version": "2025.12", "status": "affected" }, { "version": "2025.13", "status": "affected" }, { "version": "2025.14", "status": "affected" }, { "version": "2025.15", "status": "affected" }, { "version": "2025.16", "status": "affected" }, { "version": "2025.17", "status": "affected" }, { "version": "2025.18", "status": "affected" }, { "version": "2025.19", "status": "affected" }, { "version": "2025.20", "status": "affected" }, { "version": "2025.21", "status": "affected" }, { "version": "2025.22", "status": "affected" }, { "version": "2025.23", "status": "affected" }, { "version": "2025.24", "status": "affected" }, { "version": "2025.25", "status": "affected" }, { "version": "2025.26", "status": "affected" }, { "version": "2025.27", "status": "affected" }, { "version": "2025.28", "status": "affected" }, { "version": "2025.29", "status": "affected" }, { "version": "2025.30", "status": "affected" }, { "version": "2025.31", "status": "affected" }, { "version": "2025.32", "status": "affected" }, { "version": "2025.33", "status": "affected" }, { "version": "2025.34", "status": "affected" }, { "version": "2025.35", "status": "affected" }, { "version": "2025.36", "status": "affected" }, { "version": "2025.37", "status": "affected" }, { "version": "2025.38", "status": "affected" }, { "version": "2025.39", "status": "affected" }, { "version": "2025.40", "status": "affected" }, { "version": "2025.41", "status": "affected" }, { "version": "2025.42", "status": "affected" }, { "version": "2025.43", "status": "affected" }, { "version": "2025.44", "status": "affected" }, { "version": "2025.45", "status": "affected" }, { "version": "2025.46", "status": "affected" }, { "version": "2025.47", "status": "affected" }, { "version": "2025.48", "status": "affected" }, { "version": "2025.49", "status": "affected" }, { "version": "2025.50", "status": "affected" }, { "version": "2025.51", "status": "affected" }, { "version": "2025.52", "status": "affected" }, { "version": "2025.53", "status": "affected" }, { "version": "2025.54", "status": "affected" }, { "version": "2025.55", "status": "affected" }, { "version": "2025.56", "status": "affected" }, { "version": "2025.57", "status": "affected" }, { "version": "2025.58", "status": "affected" }, { "version": "2025.59", "status": "affected" }, { "version": "2025.60", "status": "affected" }, { "version": "2025.61", "status": "affected" }, { "version": "2025.62", "status": "affected" }, { "version": "2025.63", "status": "affected" }, { "version": "2025.64", "status": "affected" }, { "version": "2025.65", "status": "affected" }, { "version": "2025.66", "status": "affected" }, { "version": "2025.67", "status": "affected" }, { "version": "2025.68", "status": "affected" }, { "version": "2025.69", "status": "affected" }, { "version": "2025.70", "status": "affected" }, { "version": "2025.71", "status": "affected" }, { "version": "2025.72", "status": "affected" }, { "version": "2025.73", "status": "affected" }, { "version": "2025.74", "status": "affected" }, { "version": "2025.75", "status": "affected" }, { "version": "2025.76", "status": "affected" }, { "version": "2025.77", "status": "affected" }, { "version": "2025.78", "status": "affected" }, { "version": "2025.79", "status": "affected" }, { "version": "2025.80", "status": "affected" }, { "version": "2025.81", "status": "affected" }, { "version": "2025.82", "status": "affected" }, { "version": "2025.83", "status": "affected" }, { "version": "2025.84", "status": "affected" }, { "version": "2025.85", "status": "affected" }, { "version": "2025.86", "status": "affected" }, { "version": "2025.87", "status": "affected" }, { "version": "2025.88", "status": "affected" }, { "version": "2025.89", "status": "affected" } ] } ] } } }