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CVE-2020-12069

CODESYS V3 prone to Inadequate Password Hashing

HIGH
7.8
CVSS Score
Published: December 26, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 02:51 AM UTC
115 products affected across 4 vendors750-8202 Firmware750-8206 Firmware750-8217 Firmware

Using CODESYS V3 containing the CmpUserMgr by CODESYS?

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In CODESYS V3 products in all versions prior V3.5.16.0 containing the CmpUserMgr, the CODESYS Control runtime system stores the online communication passwords using a weak hashing algorithm. This can be used by a local attacker with low privileges to gain full control of the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Control for BeagleBone· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for emPC-A/iMX6· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for IOT2000· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for Linux· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for PFC100· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for PFC200· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for Plcnext· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control for Raspberry Pi· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control RTE V3· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
Control V3 Runtime System Toolkit· Codesys
95%
v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement

References (4)

Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2021-061/
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2022-022/
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2022-031/
Vendor Advisory
Source: [email protected]
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=12943&token=d097958a67ba382de688916f77e3013c0802fade&download=

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCERTVDE
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-916

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