HomeOpenbsdCVE-2021-34999

CVE-2021-34999

MEDIUM
5.5CVSS
Published: 2024-05-07
Updated: 2025-08-14
AI Analysis

Description

OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel. . Was ZDI-CAN-14540.

CVSS Metrics

Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
local
Complexity
low
Privileges
low
User Action
none
Scope
unchanged
Confidentiality
high
Integrity
none
Availability
none
Weaknesses
CWE-908

Metadata

Primary Vendor
OPENBSD
Published
5/7/2024
Last Modified
8/14/2025
Source
NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

openbsd : openbsd

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CVE-CVE-2021-34999 | MEDIUM Severity | CVEDatabase.com | CVEDatabase.com