What’s Vulnerable › Vulnerabilities

CVE-2021-35000: OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability

• Severity: low (CVSS 3.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-07 · updated 2026-06-17
• Weakness: CWE-908

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-16112.

Affected products

• OpenBSD: 6.9

References

• https://www.zerodayinitiative.com/advisories/ZDI-22-012/
• https://www.zerodayinitiative.com/advisories/ZDI-22-012/

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