VULNERABILITY INTELLIGENCE

CVE-2021-34599

CVSS score7.4 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2021-12-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

Affected versions of CODESYS Git in Versions prior to V1.1.0.0 lack certificate validation in HTTPS handshakes. CODESYS Git does not implement certificate validation by default, so it does not verify that the server provides a valid and trusted HTTPS certificate. Since the certificate of the server to which the connection is made is not properly verified, the server connection is vulnerable to a man-in-the-middle attack.

Weakness classification

  • info@cert.vde.com: CWE-295

Primary references