CVE-2026-56099
Medium · 5.3CVSS
5.3
EPSS
0.5%
Published
Jun 18, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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