CODESYS Control Runtime System 3.5.16.10/3.5.17.0 heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in CODESYS Control Runtime System. Affected by this issue is some unknown functionality. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2021-33485. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in CODESYS Control Runtime System and classified as critical. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 08/04/2021. The advisory is shared at customers.codesys.com. This vulnerability is known as CVE-2021-33485. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.5.17.10 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.3

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

NVD Base Score: 9.8
NVD Vector: 🔍

ADP CISA Base Score: 9.8
ADP CISA 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: Heap-based overflow
CWE: CWE-122 / 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: Control Runtime System 3.5.17.10

Timelineinfo

05/21/2021 🔍
08/04/2021 +75 days 🔍
08/04/2021 +0 days 🔍
05/30/2026 +1760 days 🔍

Sourcesinfo

Advisory: customers.codesys.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-33485 (🔍)
GCVE (CVE): GCVE-0-2021-33485
GCVE (VulDB): GCVE-100-180049

Entryinfo

Created: 08/04/2021 12:34
Updated: 05/30/2026 20:42
Changes: 08/04/2021 12:34 (36), 08/07/2021 17:53 (3), 05/30/2026 20:42 (43)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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