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CVE-2021-34599

HIGH
Published 2021-12-01T09:00:15.883759Z
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CVSS Score

V3.1
7.4
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.273
Higher than 27.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

CODESYS

CODESYS Git

Affected Versions:

CODESYS Git

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-hgcw-m9r8-99rp

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-34599
WEB https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download

Advisory provided by GitHub Security Advisory Database. Published: December 2, 2021, Modified: May 13, 2022

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16959&token=3ce11e44a3277c4520d732ea2e630f2e06bd46ff&download
Published: 2021-12-01T09:00:15.883759Z
Last Modified: 2024-09-17T02:32:29.181Z
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