How severe is CVE-2026-44469?

CVE-2026-44469 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-44469 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44469?

CVE-2026-44469 affects Codesys Development System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44469?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-44469 have an EU (EUVD) identifier?

Yes. CVE-2026-44469 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31797.

When was CVE-2026-44469 published?

CVE-2026-44469 was published on 2026-05-26 and last updated on 2026-06-17.

CVE-2026-44469

CVE-2026-44469 is a high-severity vulnerability in Codesys Development System with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31797
Weakness: CWE-276
Affected product: Codesys Development System
Published: 2026-05-26
Last modified: 2026-06-17

Description

The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.

Frequently asked questions

What is CVE-2026-44469?: The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.
How severe is CVE-2026-44469?: CVE-2026-44469 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-44469 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44469?: CVE-2026-44469 affects Codesys Development System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44469?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-44469 have an EU (EUVD) identifier?: Yes. CVE-2026-44469 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31797.
When was CVE-2026-44469 published?: CVE-2026-44469 was published on 2026-05-26 and last updated on 2026-06-17.

References

https://www.certvde.com/en/advisories/VDE-2026-055/

Affected products (1)

cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*

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