CVE-2021-34595CWE-823

CODESYS V2 runtime: out-of-bounds read or write access may result in denial-of-service

High · published October 26, 2021

CVSS v3.1
8.1
EPSS
1%
Percentile
58.0
In the wild
Unconfirmed
What it is

A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition or local memory overwrite.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00855 · 58.0th percentile
Weakness
CWE-823 · Use of Out-of-range Pointer Offset
Published
2021-10-26T09:55Z
EPSS history
Timeline
  • 26 OCT 09:55Z
    CODESYS V2 runtime: out-of-bounds read or write access may result in denial-of-service
    cvelistv5