CVE-2026-56099

MediumCVSS 5.3/10Last modified Jul 14, 2026

Description

OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published
Jun 18, 2026
Last modified
Jul 14, 2026
NVD status
Analyzed

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CVE-2026-56099: Medium severity, CVSS 5.3 | Vulnix