CVE-2022-45790 | Omron FINS memory protection susceptible to bruteforce

The Omron FINS protocol has an authenticated feature to prevent access to memory regions. Authentication is susceptible to bruteforce attack, which may allow an adversary to gain access to protected memory. This access can allow overwrite of values including programmed logic.

Published: 2024-01-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-45790 is rated Moderate Risk (55.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.39%). 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-2022-45790

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 2025-11-21 0.33% 0.39% +0.06%
2 2025-11-18 0.39% 0.33% -0.06%
3 2025-03-30 — 0.39% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-45790

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 4.0 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2022-45790

Affected software / configurations for CVE-2022-45790

Vendor Product Version Raw CPE
omron cj1g-cpu45p_firmware < 4.1 cpe:2.3:o:omron:cj1g-cpu45p_firmware:*:*:*:*:*:*:*:*
omron cj1g-cpu45p-gtc_firmware < 4.1 cpe:2.3:o:omron:cj1g-cpu45p-gtc_firmware:*:*:*:*:*:*:*:*
omron cj1g-cpu44p_firmware < 4.1 cpe:2.3:o:omron:cj1g-cpu44p_firmware:*:*:*:*:*:*:*:*
omron cj1g-cpu43p_firmware < 4.1 cpe:2.3:o:omron:cj1g-cpu43p_firmware:*:*:*:*:*:*:*:*
omron cj1g-cpu42p_firmware < 4.1 cpe:2.3:o:omron:cj1g-cpu42p_firmware:*:*:*:*:*:*:*:*
omron cp1e-e_firmware < 1.3 cpe:2.3:o:omron:cp1e-e_firmware:*:*:*:*:*:*:*:*
omron cp1e-n_firmware < 1.3 cpe:2.3:o:omron:cp1e-n_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu68_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu68_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu67_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu67_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu66_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu66_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu65_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu65_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu64_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu64_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu68-eip_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu68-eip_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu67-eip_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu67-eip_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu66-eip_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu66-eip_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu65-eip_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu65-eip_firmware:*:*:*:*:*:*:*:*
omron cj2h-cpu64-eip_firmware < 1.5 cpe:2.3:o:omron:cj2h-cpu64-eip_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu35_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu35_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu34_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu34_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu33_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu33_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu32_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu32_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu31_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu31_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu15_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu15_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu14_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu14_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu13_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu13_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu12_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu12_firmware:*:*:*:*:*:*:*:*
omron cj2m-cpu11_firmware < 2.1 cpe:2.3:o:omron:cj2m-cpu11_firmware:*:*:*:*:*:*:*:*
omron cj2m-md211_firmware < 2.1 cpe:2.3:o:omron:cj2m-md211_firmware:*:*:*:*:*:*:*:*
omron cj2m-md212_firmware < 2.1 cpe:2.3:o:omron:cj2m-md212_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu67s_firmware < 2.1 cpe:2.3:o:omron:cs1d-cpu67s_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu65s_firmware < 2.1 cpe:2.3:o:omron:cs1d-cpu65s_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu44s_firmware < 2.1 cpe:2.3:o:omron:cs1d-cpu44s_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu42s_firmware < 2.1 cpe:2.3:o:omron:cs1d-cpu42s_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu65p_firmware < 1.4 cpe:2.3:o:omron:cs1d-cpu65p_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu67p_firmware < 1.4 cpe:2.3:o:omron:cs1d-cpu67p_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu67h_firmware < 1.4 cpe:2.3:o:omron:cs1d-cpu67h_firmware:*:*:*:*:*:*:*:*
omron cs1d-cpu65h_firmware < 1.4 cpe:2.3:o:omron:cs1d-cpu65h_firmware:*:*:*:*:*:*:*:*
omron cs1h-cpu67h_firmware < 4.1 cpe:2.3:o:omron:cs1h-cpu67h_firmware:*:*:*:*:*:*:*:*
omron cs1h-cpu66h_firmware < 4.1 cpe:2.3:o:omron:cs1h-cpu66h_firmware:*:*:*:*:*:*:*:*
omron cs1h-cpu65h_firmware < 4.1 cpe:2.3:o:omron:cs1h-cpu65h_firmware:*:*:*:*:*:*:*:*
omron cs1h-cpu64h_firmware < 4.1 cpe:2.3:o:omron:cs1h-cpu64h_firmware:*:*:*:*:*:*:*:*
omron cs1h-cpu63h_firmware < 4.1 cpe:2.3:o:omron:cs1h-cpu63h_firmware:*:*:*:*:*:*:*:*
omron cs1g-cpu45h_firmware < 4.1 cpe:2.3:o:omron:cs1g-cpu45h_firmware:*:*:*:*:*:*:*:*
omron cs1g-cpu44h_firmware < 4.1 cpe:2.3:o:omron:cs1g-cpu44h_firmware:*:*:*:*:*:*:*:*
omron cs1g-cpu43h_firmware < 4.1 cpe:2.3:o:omron:cs1g-cpu43h_firmware:*:*:*:*:*:*:*:*
omron cs1g-cpu42h_firmware < 4.1 cpe:2.3:o:omron:cs1g-cpu42h_firmware:*:*:*:*:*:*:*:*

References for CVE-2022-45790

cvelogic Threat Intelligence