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[NEW] [medium] CODESYS: Vulnerability allows Denial of Service

mediumCVE-2026-35226
An attacker from an adjacent network can exploit a vulnerability in CODESYS to conduct a Denial of Service attack.

CSIRTS triage

vendor: CODESYSproduct: CODESYSDenial of service
What
An attacker from an adjacent network can exploit a vulnerability to conduct a Denial of Service attack.
Who is affected
Users of CODESYS are affected.
Urgency
Remediation is medium urgency as exploitation is not confirmed.
Action
Update to the latest version of CODESYS to address the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-07-29
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2555

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-35226coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for CODESYS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories