PT-2025-31800 · Codesys · Codesys Control

Published 2025-08-04 · Updated 2025-08-09 · CVE-2025-41691

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions CODESYS Control versions 3.5.21.10

Description An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-00082

CVE-2025-41691

Affected Products

Codesys Control

References · 9

• https://bdu.fstec.ru/vul/2026-00082 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-41691 · Security Note
• https://twitter.com/VulmonFeeds/status/1952292558169571409 · Twitter Post
• https://certvde.com/de/advisories/VDE-2025-070 · Note
• https://twitter.com/cracbot/status/1954135614456017177 · Twitter Post
• https://t.me/cveNotify/130734 · Telegram Post
• https://t.me/CVEtracker/29079 · Telegram Post
• https://twitter.com/CVEnew/status/1952292253268906438 · Twitter Post
• https://twitter.com/offseq/status/1952293591411208376 · Twitter Post