CVE-2022-26380

Device reboot via nonexistent SNMP key lookup

Published Apr 12, 2022 · Updated Aug 3, 2024

Out-of-bounds read in Siemens SCALANCE X-300 firmware before 4.1.4 allows remote attackers on an adjacent network to reboot affected switches. The SNMP request handler fails to verify that a requested key exists before reading it, so specific SNMP information requests reach an invalid lookup. Unauthenticated SNMP access from an adjacent network is sufficient; successful exploitation reboots the device and interrupts switching service.

CVSS severity7.5
High
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Siemens SCALANCE X-300 firmware before 4.1.4 allows remote attackers on an adjacent network to reboot affected switches. The SNMP request handler fails to verify that a requested key exists before reading it, so specific SNMP information requests reach an invalid lookup. Unauthenticated SNMP access from an adjacent network is sufficient; successful exploitation reboots the device and interrupts switching service.

The record

CVE
CVE-2022-26380
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Siemens
Product
SCALANCE X307-2 EEC (2x 230V)
Classifications
CWE-125, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions < V4.1.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · SCALANCE X307-2 EEC (2x 230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2Mversion=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (230V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X307-3LDversion=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X320-1 FEversion=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (230V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X310FEversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X310version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M TS (24V)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (230V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X307-3version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (24V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2LH+version=All versions < V4.1.4
Siemens · SCALANCE X308-2M PoEversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2M TSversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (230V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X306-1LD FEversion=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (230V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X304-2FEversion=All versions < V4.1.4
Siemens · SCALANCE X308-2LDversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X320-1-2LD FEversion=All versions < V4.1.4
Siemens · SCALANCE X408-2version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE TS (24V, ports on front)version=All versions < V4.1.4
Siemens · SIPLUS NET SCALANCE X308-2version=All versions < V4.1.4

Published CVSS scores

7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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