CVE-2022-31805 | Insecure transmission of credentials

In the CODESYS Development System multiple components in multiple versions transmit the passwords for the communication between clients and servers unprotected.

Published: 2022-06-24 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-31805 is rated Moderate Risk (49.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.95%). 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-2022-31805

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 2026-06-21 0.90% 0.95% +0.05%
2 2026-06-15 0.28% 0.90% +0.63%
3 2025-10-18 — 0.28% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-31805

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]
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]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2022-31805

Affected software / configurations for CVE-2022-31805

Vendor Product Version Raw CPE
codesys development_system < 2.3.9.69 cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*
codesys edge_gateway < 3.5.18.30 cpe:2.3:a:codesys:edge_gateway:*:*:*:*:*:windows:*:*
codesys gateway < 2.3.9.38 cpe:2.3:a:codesys:gateway:*:*:*:*:*:*:*:*
codesys hmi_sl < 3.5.18.30 cpe:2.3:a:codesys:hmi_sl:*:*:*:*:*:*:*:*
codesys opc_server < 3.5.18.30 cpe:2.3:a:codesys:opc_server:*:*:*:*:*:*:*:*
codesys plchandler < 3.5.18.30 cpe:2.3:a:codesys:plchandler:*:*:*:*:*:*:*:*
codesys plcwinnt < 2.4.7.57 cpe:2.3:a:codesys:plcwinnt:*:*:*:*:*:*:*:*
codesys runtime_toolkit < 2.4.7.57 cpe:2.3:a:codesys:runtime_toolkit:*:*:*:*:*:*:x86:*
codesys sp_realtime_nt < 2.3.7.30 cpe:2.3:a:codesys:sp_realtime_nt:*:*:*:*:*:*:*:*
codesys web_server < 1.1.9.23 cpe:2.3:a:codesys:web_server:*:*:*:*:*:*:*:*

References for CVE-2022-31805

cvelogic Threat Intelligence