CVE-2022-30791
CODESYS V3: CmpBlkDrvTcp allows unauthenticated attackers to block all its available TCP connections
HIGH
7.5
CVSS Score
Published: July 11, 2022 at 10:40 AM UTC
Updated: June 17, 2026 at 04:44 AM UTC
27 products affected across 1 vendorControl for Linux SLControl for PFC100 SLControl for IOT2000 SL
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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
Description
In CmpBlkDrvTcp of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new TCP connections. Existing connections are not affected.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.5.0.0
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
v < 4.5.0.0
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.6.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V4.5.0.0, so it looks safe — our inference, not a vendor statement
v < 4.6.0.0
Affected range stops below 4.6.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V4.5.0.0, so it looks safe — our inference, not a vendor statement
v < 4.5.0.0
Affected range stops below 4.5.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.5.18.20, so it looks safe — our inference, not a vendor statement
Affected range stops below V3.5.18.20, 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 (1)
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17128&token=bee4d8a57f19be289d623ec90135493b5f9179e3&download=CVSS
7.5HIGHCERTVDE
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400
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