CODESYS prior 1.1.9.20 Web Server buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in CODESYS and classified as critical. Affected by this vulnerability is an unknown functionality of the component Web Server. Such manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2021-30191. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in CODESYS and classified as critical. Affected by this issue is an unknown code of the component Web Server. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 05/25/2021. The advisory is available at customers.codesys.com. This vulnerability is handled as CVE-2021-30191. The technical details are unknown and an exploit is not available.

Upgrading to version 1.1.9.20 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CODESYS 1.1.9.20

Timelineinfo

04/07/2021 🔍
05/25/2021 +48 days 🔍
05/25/2021 +0 days 🔍
08/15/2025 +1543 days 🔍

Sourcesinfo

Advisory: customers.codesys.com
Status: Confirmed

CVE: CVE-2021-30191 (🔍)
GCVE (CVE): GCVE-0-2021-30191
GCVE (VulDB): GCVE-100-175802

Entryinfo

Created: 05/25/2021 21:14
Updated: 08/15/2025 22:33
Changes: 05/25/2021 21:14 (36), 05/29/2021 08:49 (5), 05/29/2021 08:51 (18), 08/15/2025 22:33 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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