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01 Record

CVE-2026-76992

Uncontrolled Memory Allocation in CODESYS Gateway Client

HighPUBLISHEDCNA: CERTVDE
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

02 Description

Uncontrolled Memory Allocation in CODESYS Gateway Client

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.32% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 25.5% of scored records. A rank, not a probability.
NVD base score
8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-09-30.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-30 11:07Z29 DAYS AGO
Last updated
2026-09-30 15:28Z29 DAYS AGO
Reserved
2026-08-20
Assigning CNA
CERTVDE
Record state
PUBLISHED
Severity
High (CVSS 8.7)
CNA CVSS vector
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
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
7eb2ba74dd0ac78758b7ec267cc4a7240636e8631fa4ed9175c36546d194b47e

05 Affected products

VendorProductVersionsPlatforms
CODESYSDevelopment System 33.0.0.0 to < 3.5.22.40—
CODESYSGateway3.0.0.0 to < 3.5.22.40—
CODESYSEdge Gateway for Windows3.0.0.0 to < 3.5.22.40—
CODESYSHMI (SL)3.0.0.0 to < 3.5.22.40—
CODESYSOPC DA Server SL3.0.0.0 to < 3.5.22.40—
CODESYSPLCHandler3.0.0.0 to < 3.5.22.40—
CODESYSRuntime Toolkit3.0.0.0 to < 3.5.22.40—
CODESYSEdge Gateway for Linux3.15.0.0 to < 4.23.0.0—

06 References