CVE-2026-33817

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

06/04/2026

Last modified:

07/04/2026

Description

Index out-of-range when encountering a branch page with zero elements in go.etcd.io/bbolt

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.20 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.20

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://github.com/etcd-io/bbolt/pull/1171/changes/386d5b69785937d1aa20cb25c8439404cf398143
https://github.com/golang/vulndb/issues/4923
https://pkg.go.dev/vuln/GO-2026-4923