Vulnerability in Codesys V2
CVE-2021-34593
In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or f…
EPSS: 0.026 (83.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Codesys V2 — versions Runtime Toolkit 32 bit full, PLCWinNT
- Codesys Plcwinnt
- Codesys Runtime_toolkit
- Wago 750-8202
- Wago 750-8202_firmware
- Wago 750-8203
- Wago 750-8203_firmware
- Wago 750-8204
- Wago 750-8204_firmware
- Wago 750-8206
Weakness classification (CWE)
Public proof-of-concept exploits
References
- info@cert.vde.com (x_refsource_CONFIRM, Vendor Advisory)
- info@cert.vde.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- info@cert.vde.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- info@cert.vde.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-34593?
- CVE-2021-34593 is a high-severity vulnerability in Codesys V2, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2021-10-26.
- How severe is CVE-2021-34593?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-34593 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.