https://reddit.com/r/netsec/comments/1ua20fg/openbsd_mpls_kernel_stack_leaks_remotely/: OpenBSD MPLS kernel stack leaks remotely (CVE-2026-56099)
Published Jun 19, 2026
·Updated
Affected Software
1 affected component
OpenBSD OpenBSD-current<2026-06-18
Frequently Asked Questions
1
What is the severity of CVE-2026-56099?
CVE-2026-56099 is classified as a medium severity vulnerability due to its ability to leak kernel stack memory remotely.
2
How do I fix CVE-2026-56099?
To fix CVE-2026-56099, upgrade to the latest version of OpenBSD-current released on or after June 18, 2026.
3
What are the implications of CVE-2026-56099 for my OpenBSD system?
CVE-2026-56099 can expose sensitive kernel stack memory, potentially allowing attackers to gain insights about the system.
4
Is my system at risk if I don't use MPLS with OpenBSD?
If you do not have MPLS enabled, your OpenBSD system is not vulnerable to CVE-2026-56099.
5
Can CVE-2026-56099 be exploited remotely?
Yes, CVE-2026-56099 can be exploited remotely by sending crafted MPLS packets to the vulnerable OpenBSD system.