Source: dropbear Version: 2025.89-1 Severity: important Tags: security upstream Forwarded: https://github.com/mkj/dropbear/issues/406 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for dropbear. CVE-2026-3706[0]: | 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 exploit has been | publicly disclosed and may be utilized. Patch name: | fdec3c90a15447bd538641d85e5a3e3ac981011d. To fix this issue, it is | recommended to deploy a patch. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-3706 https://www.cve.org/CVERecord?id=CVE-2026-3706 [1] https://github.com/mkj/dropbear/issues/406 [2] https://github.com/mkj/dropbear/pull/407 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
