MinorCritical vulnerability

CVE-2026-88830 (CVSS 7.5)

NVD · officialPublished Sep 23, 2026Risk 23/100EPSS 0.4%

A unit confusion in BusyBox TLS Montgomery reduction buffer allocation causes a pre-authentication heap buffer overflow when processing a crafted ClientKeyExchange message.

Technical details

CVSS

7.5

AV:NetworkAC:LowPR:NoneUI:NoneC:NoneI:NoneA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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