CVE-2022-32138
CVE-2022-32138 is a high-severity vulnerability in Codesys Plcwinnt with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-194.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-194
- Affected product: Codesys Plcwinnt
- Published:
- Last modified:
Description
In multiple CODESYS products, a remote attacker may craft a request which may cause an unexpected sign extension, resulting in a denial-of-service condition or memory overwrite.
Frequently asked questions
- What is CVE-2022-32138?
- In multiple CODESYS products, a remote attacker may craft a request which may cause an unexpected sign extension, resulting in a denial-of-service condition or memory overwrite.
- How severe is CVE-2022-32138?
- CVE-2022-32138 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-32138 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-32138?
- CVE-2022-32138 primarily affects Codesys Plcwinnt. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-32138?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2022-32138 published?
- CVE-2022-32138 was published on 2022-06-24 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:codesys:plcwinnt:*:*:*:*:*:*:*:*
- cpe:2.3:a:codesys:runtime_toolkit:*:*:*:*:*:*:x86:*
More vulnerabilities in Codesys Plcwinnt
- CVE-2022-31806 — Critical (CVSS 9.8): In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by…
- CVE-2022-32143 — High (CVSS 8.8): In multiple CODESYS products, file download and upload function allows access to internal files in the working…
- CVE-2022-32137 — High (CVSS 8.8): In multiple CODESYS products, a low privileged remote attacker may craft a request, which may cause a heap-based buffer…
- CVE-2022-32142 — High (CVSS 8.1): Multiple CODESYS Products are prone to a out-of bounds read or write access. A low privileged remote attacker may craft…
- CVE-2022-1965 — High (CVSS 8.1): Multiple products of CODESYS implement a improper error handling. A low privilege remote attacker may craft a request,…
- CVE-2021-34595 — High (CVSS 8.1): A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32…
All CVEs affecting Codesys Plcwinnt →
Other CWE-194 vulnerabilities
- CVE-2021-38434 — High (CVSS 7.8): FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing…
- CVE-2025-13632 — Medium (CVSS 5.4): Inappropriate implementation in DevTools in Google Chrome prior to 143.0.7499.41 allowed an attacker who convinced a…