CVE-2021-34583

CODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)

State: Published
Severity: 7.5 High
Published: Oct 26, 2021
Updated: Sep 16, 2024
Reserved: Jun 10, 2021

Description

Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CERTVDE

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
CODESYS V2CODESYS	all web servers to before V1.1.9.22Affected

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=
https://www.tenable.com/security/research/tra-2021-47

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.