CVE-2023-48693

criticalpriority · track · 39EPSS 0.013 · 70 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.30% (70th) EPSS

CVSS 9.8 · critical

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

Azure RTOS ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications. An attacker can cause arbitrary read and write due to vulnerability in parameter checking mechanism in Azure RTOS ThreadX, which may lead to privilege escalation. The affected components include RTOS ThreadX v6.2.1 and below. The fixes have been included in ThreadX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedPLC Micro820 LC20cisa_csaf_ot
PLC Micro820 LC20: Migrate to Micro820 L20E V23.011 and later (this has yet to be released, target to release in Sept 2025)
https://www.rockwellautomation.com/en-ca/support/product/product-downloads.html
FixedPLC Micro850 L50Ecisa_csaf_ot
PLC Micro850 L50E: V23.011 and later
https://www.rockwellautomation.com/en-ca/support/product/product-downloads.html
FixedPLC Micro850 LC50cisa_csaf_ot
PLC Micro850 LC50: Migrate to Micro850 L50E V23.011 and later
https://www.rockwellautomation.com/en-ca/support/product/product-downloads.html
FixedPLC Micro870 L70Ecisa_csaf_ot
PLC Micro870 L70E: V23.011 and later
https://www.rockwellautomation.com/en-ca/support/product/product-downloads.html
FixedPLC Micro870 LC70cisa_csaf_ot
PLC Micro870 LC70: Migrate to Micro870 L70E V23.011 and later
https://www.rockwellautomation.com/en-ca/support/product/product-downloads.html
MitigationPLC Micro820 LC20cisa_csaf_ot
Rockwell Automation recommends the following updates:
MitigationPLC Micro850 L50Ecisa_csaf_ot
Rockwell Automation recommends the following updates:
MitigationPLC Micro850 LC50cisa_csaf_ot
Rockwell Automation recommends the following updates:
MitigationPLC Micro870 L70Ecisa_csaf_ot
Rockwell Automation recommends the following updates:
MitigationPLC Micro870 LC70cisa_csaf_ot
Rockwell Automation recommends the following updates:

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.7–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.18.7highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Lsecondary · ENISA EU

v3.18.7highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Lsecondary · security-advisories@github.comexploitability 2 · impact 6

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1395USCWE-20US

affected products (12)

Products and version ranges known to be affected.

Rockwell Automation PLC Micro820 LC20: <V14.011all versionscisa_csaf_otUS
Rockwell Automation PLC Micro850 L50E: >=V20.011|<=V22.011all versionscisa_csaf_otUS
Rockwell Automation PLC Micro850 LC50: <V12.013all versionscisa_csaf_otUS
Rockwell Automation PLC Micro870 L70E: >=V20.011|<=V22.011all versionscisa_csaf_otUS
Rockwell Automation PLC Micro870 LC70: <V12.013all versionscisa_csaf_otUS
Rockwell Automation PLC Micro820 LC20< V14.011cisa_csaf_otUS
Rockwell Automation PLC Micro850 L50EV20.011| → V22.011cisa_csaf_otUS
Rockwell Automation PLC Micro850 LC50< V12.013cisa_csaf_otUS
Rockwell Automation PLC Micro870 L70EV20.011| → V22.011cisa_csaf_otUS
Rockwell Automation PLC Micro870 LC70< V12.013cisa_csaf_otUS
azure-rtos ThreadX≤ < 6.3.0enisa_euvdEU
microsoft azure rtos threadx< 6.3.0nvdUScpe:2.3:o:microsoft:azure_rtos_threadx:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-25-226-25Rockwell Automation Micro8002025-08-14icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could result in remote code execution or may lead to privilege escalation.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2023-12-05modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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