HOMEVULNERABILITIESCVE-2026-43241
HIGH

CVE-2026-43241

Published: May 6, 2026· Updated: May 11, 2026

7.1
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:7.0th

Official Description

In the Linux kernel, the following vulnerability has been resolved:

ntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access

Number of MW LUTs depends on NTB configuration and can be set to MAX_MWS,

This patch protects against invalid index out of bounds access to mw_sizes

When invalid access print message to user that configuration is not valid.

NVD Source

Technical Analysis

CVE-2026-43241 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/0e930420945106151c6eb3d7837b4e6154e9b144
PATCHhttps://git.kernel.org/stable/c/2346856b74823a2a78109002e479a3d02526a9ce
PATCHhttps://git.kernel.org/stable/c/348e1ac9ad983ed7e62de14e1daf47f1695a4ce9
PATCHhttps://git.kernel.org/stable/c/47ce292dd45dc689747c40603222691638919189
PATCHhttps://git.kernel.org/stable/c/740945de896021b9a859e71f38f6aea72a6393cf
PATCHhttps://git.kernel.org/stable/c/85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92
PATCHhttps://git.kernel.org/stable/c/c8ba7ad2cc1c7b90570aa347b8ebbe279f1eface
PATCHhttps://git.kernel.org/stable/c/ee02c4f980c91820845dd8e469ec7dc670ab6d9d

All References (8)

→
https://git.kernel.org/stable/c/0e930420945106151c6eb3d7837b4e6154e9b144Patch
→
https://git.kernel.org/stable/c/2346856b74823a2a78109002e479a3d02526a9cePatch
→
https://git.kernel.org/stable/c/348e1ac9ad983ed7e62de14e1daf47f1695a4ce9Patch
→
https://git.kernel.org/stable/c/47ce292dd45dc689747c40603222691638919189Patch
→
https://git.kernel.org/stable/c/740945de896021b9a859e71f38f6aea72a6393cfPatch
→
https://git.kernel.org/stable/c/85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92Patch
→
https://git.kernel.org/stable/c/c8ba7ad2cc1c7b90570aa347b8ebbe279f1efacePatch
→
https://git.kernel.org/stable/c/ee02c4f980c91820845dd8e469ec7dc670ab6d9dPatch

Quick Facts

CVE IDCVE-2026-43241
CVSS Score7.1 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 6, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-43241 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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