Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1325 CNY

100%
Buy Us a Coffee

CVE-2026-56099— OpenBSD mpls_do_error Kernel Stack Memory Disclosure via MPLS Input

CVSS 5.3 · Medium

Affected Version Matrix 1

VendorProductVersion RangeStatus
openbsdsrc< 6a23123ec05f1eb29cfcaae0f3a468b2e1983cfdaffected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-56099

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenBSD mpls_do_error Kernel Stack Memory Disclosure via MPLS Input
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
openbsdsrc 0 ~ 6a23123ec05f1eb29cfcaae0f3a468b2e1983cfd -

II. Public POCs for CVE-2026-56099

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-56099

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-56099 (1)

Vendor Advisories for CVE-2026-56099 (2)

IV. Related Vulnerabilities

Same product: src
Same vendor: openbsd
Same weakness: CWE-125

V. Comments for CVE-2026-56099

No comments yet

Leave a comment