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High severity7.4NVD Advisory· Published Dec 1, 2021· Updated Jun 17, 2026

CVE-2021-34599

CVE-2021-34599

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.

Affected products

3
  • Codesys/Git
    cpe:2.3:a:codesys:git:*:*:*:*:*:*:*:*
    Range: <1.1.0.0
  • Codesys/CODESYS Gitllm-fuzzy2 versions
    <V1.1.0.0+ 1 more
    • (no CPE)range: <V1.1.0.0
    • (no CPE)range: CODESYS Git

Patches

Vulnerability mechanics

References

1

News mentions

0

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