CVE-2021-34596: medium-severity vulnerability in CODESYS V2
CODESYS V2 runtime: Access of Uninitialized Pointer may result in denial-of-service
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.9%
exploitation probability
0.9%top 43% of all CVEs
observed exploitation
nono source reports it
A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
CODESYS · CODESYS V2Related CVEs — CODESYS V2
In the same product, most dangerous first.
CVE-2021-34586HIGHCODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS)EPSS 14.1%CVE-2021-34583HIGHCODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)EPSS 8.4%CVE-2021-34593HIGHCODESYS V2 runtime: unauthenticated invalid requests may result in denial-of-serviceEPSS 2.7%CVE-2021-34584CRITICALCODESYS V2 web server: crafted requests could trigger a buffer over-read (DoS)EPSS 1.1%CVE-2021-34585HIGHCODESYS V2 web server: crafted requests could trigger a pointer dereference with an invalid address (DoS)EPSS 0.9%CVE-2021-34595HIGHCODESYS V2 runtime: out-of-bounds read or write access may result in denial-of-serviceEPSS 0.9%