CVE-2022-31205

In Omron CS series, CJ series, and CP series PLCs through 2022-05-18, the password for access to the Web UI is stored in memory area D1449...D1452 and can be read out using the Omron FINS protocol without any further authentication.

Published: 2022-07-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-31205 is rated Moderate Risk (44.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-31205

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.17% 0.51% +0.34%
2 2026-02-11 0.07% 0.17% +0.09%
3 2025-03-17 — 0.07% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-31205

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2022-31205

Affected software / configurations for CVE-2022-31205

Vendor Product Version Raw CPE
omron sysmac_cs1_firmware < 4.1 cpe:2.3:o:omron:sysmac_cs1_firmware:*:*:*:*:*:*:*:*
omron sysmac_cj2m_firmware < 2.1 cpe:2.3:o:omron:sysmac_cj2m_firmware:*:*:*:*:*:*:*:*
omron sysmac_cj2h_firmware < 1.5 cpe:2.3:o:omron:sysmac_cj2h_firmware:*:*:*:*:*:*:*:*
omron sysmac_cp1e_firmware < 1.30 cpe:2.3:o:omron:sysmac_cp1e_firmware:*:*:*:*:*:*:*:*
omron sysmac_cp1h_firmware < 1.30 cpe:2.3:o:omron:sysmac_cp1h_firmware:*:*:*:*:*:*:*:*
omron sysmac_cp1l_firmware < 1.10 cpe:2.3:o:omron:sysmac_cp1l_firmware:*:*:*:*:*:*:*:*
omron cp1w-cif41_firmware — cpe:2.3:o:omron:cp1w-cif41_firmware:-:*:*:*:*:*:*:*

References for CVE-2022-31205

URL Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02 Third Party Advisory US Government Resource
https://www.forescout.com/blog/ Third Party Advisory
cvelogic Threat Intelligence