CVE-2022-2586

Linux Kernel Use-After-Free Vulnerability

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

CVSS 5.3 KEVPatch available

This record: live connection— last retrieved: 7 November 2026 at 00:32.

Vendor

Siemens

Product

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

up to version vers:intdot/<1.1

Published

8 January 2024

Last modified

14 October 2026

Original source information

Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.

Technical description

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

CVSS 3.1 — vector details

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

Attack vector

LOCAL

Privileges required

LOW

User interaction

NONE

Confidentiality

None

Integrity

Limited

Availability

High

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

10.2%

Percentile

96e

Source: FIRST.org, updated on 6 November 2026.

Patch information

Only build and run applications from trusted sources

IACS Radar assessment

Our own interpretation and context for the source data above.

IACS Radar assessment

Our own interpretation and context for this vulnerability — not an official source.

IACS Radar priority score

62/ 100

Based on CVSS 5.3, EPSS 10.2%, industrial relevance 65/100; raised due to confirmed active exploitation (KEV).

Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.

Conditions for exploitation

•Local or adjacent access to the device is required.
•Limited user privileges are required.
•No user interaction required.

Operational impact & energy relevance

Possible loss of visibility of or control over the process upon successful exploitation.

Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Vendor "Siemens" is a known supplier of equipment for the energy sector. Included in the CISA KEV catalogue: confirmed evidence of actual exploitation.

Additional mitigations

•Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Recommended defensive measures

•Apply the latest firmware or software update and validate its integrity.
•Restrict network access to the affected device to a dedicated OT management segment.
•Implement network segmentation in line with zones and conduits (IEC 62443-3-2).
•Monitor for abnormal protocol traffic using an OT-aware detection system.

Industrial relevance score

65/ 100

• Mentioned in an official CISA ICS advisory, which confirms direct relevance to industrial control systems.
• Vendor "Siemens" is a known supplier of equipment for the energy sector.
• Included in the CISA KEV catalogue: confirmed evidence of actual exploitation.

Automatically classified as industrially relevant based on CISA/NVD signals (see reasons).

Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.

IEC 62443 mapping

IEC 62443-4-1FR3 · Systeemintegriteit

Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.

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