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CVE record · CVE-2026-8047

Out-of-bounds Write in CODESYS Control

CVSS 8.7 HighEPSS 0.0044 · 38th percentile

Published by the CVE Program (CNA: CERTVDE) at 26 May 2026, 06:49 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
CODESYS CODESYS Control RTE (SL)
  • affected 3.5.21.0 to before 3.5.22.20 semver
Other versions: unaffected
CODESYS CODESYS Control RTE (for Beckhoff CX) SL
  • affected 3.5.21.0 to before 3.5.22.20 semver
Other versions: unaffected
CODESYS CODESYS Control Win (SL)
  • affected 3.5.21.0 to before 3.5.22.20 semver
Other versions: unaffected
CODESYS CODESYS HMI (SL)
  • affected 3.5.21.0 to before 3.5.22.20 semver
Other versions: unaffected
CODESYS CODESYS Runtime Toolkit
  • affected 3.5.21.0 to before 3.5.22.20 semver
Other versions: unaffected
CODESYS CODESYS Control for BeagleBone SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for emPC-A/iMX6 SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for IOT2000 SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for Linux ARM SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for Linux SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for PFC100 SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for PFC200 SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for PLCnext SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for Raspberry Pi SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Control for WAGO Touch Panels 600 SL
  • affected 0.0.0 to before 4.21.0.0 semver
Other versions: unaffected
CODESYS CODESYS Virtual Control SL
  • affected 4.15.0.0 to before 4.21.0.0 semver
Other versions: unaffected
Identifiers
CVE-2026-8047
CNA
CERTVDE
Weakness (CWE)
CWE-1284
Tags
Published
26 May 2026
Updated
26 May 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CNA (CERTVDE)Used for this record
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (CERTVDE)
  • CISA KEV Not listed.
  • EPSS 0.0044, the 38th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 May 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.