CVE-2026-0393
CVE-2026-0393 is a medium-severity vulnerability in Codesys Visualization with a CVSS 3.x base score of 6.5. 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-522.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31266
- Weakness: CWE-522
- Affected product: Codesys Visualization
- Published:
- Last modified:
Description
The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.
Frequently asked questions
- What is CVE-2026-0393?
- The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.
- How severe is CVE-2026-0393?
- CVE-2026-0393 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-0393 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-0393?
- CVE-2026-0393 affects Codesys Visualization. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-0393?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-0393 have an EU (EUVD) identifier?
- Yes. CVE-2026-0393 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31266.
- When was CVE-2026-0393 published?
- CVE-2026-0393 was published on 2026-05-21 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:codesys:visualization:*:*:*:*:*:*:*:*
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