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MEDIUM · 5.3

CVE-2026-88840

BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.

Vulnerability Description

BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-88840?

CVE-2026-88840 is a vulnerability with a CVSS score of 5.3 (MEDIUM). BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.

How severe is CVE-2026-88840?

CVE-2026-88840 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-88840?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.