CVE-2021-29241
HIGH
7.5
CVSS Score
Published: May 3, 2021 at 01:17 PM UTC
Updated: June 17, 2026 at 03:47 AM UTC
11 products affected across 1 vendorControl for emPC-A/iMX6 SLControl for BeagleBone SLControl for PFC100 SL
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.0 ≤ v < 4.0.1.0
Affected range stops below 4.0.1.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 4.0.1.0
Affected range stops below 4.0.1.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 4.0.1.0
Affected range stops below 4.0.1.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 4.0.1.0
Affected range stops below 4.0.1.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 3.5.16.0
Affected range stops below 3.5.16.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 4.0.1.0
Affected range stops below 4.0.1.0, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 3.5.16.70
Affected range stops below 3.5.16.70, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 3.5.16.70
Affected range stops below 3.5.16.70, so it looks safe — our inference, not a vendor statement
3.0 ≤ v < 3.5.16.703.0 ≤ v < 4.1.0.0
Affected range stops below 3.5.16.70, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.0.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCPermissions RequiredVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.phpx_refsource_MISCVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14637&token=8dbd75ae7553ae3be25e22f741db783b31e14799&download=x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.codesys.com/security/security-reports.htmlSSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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