CVE-2023-3663

Name: CVE-2023-3663
Creator: NVD / NIST
Published: 2023-08-03T11:15:10.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2023-3663 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.03%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-940

Affected Software

Vendor	Product	Versions
Codesys	Development System	>= 3.5.11.20, < 3.5.19.20

References

https://cert.vde.com/en/advisories/VDE-2023-022/Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2023-022/Third Party Advisory

Timeline

Published: Aug 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3663?

How severe is CVE-2023-3663?

CVE-2023-3663 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3663?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3663?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST