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CVE-2026-21439

badkeys vulnerable to ASCII control character injection on console via malformed input

CVSS 2 LOWEPSS 0.3%CWE-150
Vexday Risk Score
8Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 2EPSS 0.3%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
05 jan 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
badkeys is a tool and library for checking cryptographic public keys for known vulnerabilities. In versions 0.0.15 and below, an attacker may inject content with ASCII control characters like vertical tabs, ANSI escape sequences, etc., that can create misleading output of the badkeys command-line tool. This impacts scanning DKIM keys (both --dkim and --dkim-dns), SSH keys (--ssh-lines mode), and filenames in various modes. This issue is fixed in version 0.0.16.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Produtos afetados
badkeys · badkeys

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