ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-116014

open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions.

Published Oct 24, 2026 · catalog updated Oct 29, 2026 · open62541 1.5.0 before 1.5.7

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-116014. EPSS is 0.43%. Act only if a listed version of open62541 1.5.0 before 1.5.7 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (open62541 1.5.0 before 1.5.7).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.43%
Remediation
Advisory link
Affected products
Debian:13 open62541 · Debian:14 open62541 · vendor open62541 · vendor open62541 open62541

open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:13 open625411.4.11.1-1, 1.4.18-1
  • Debian:14 open625411.4.11.1-1, 1.4.18-1
  • vendor open62541version unspecified
  • vendor open62541 open62541version unspecified

How to fix CVE-2026-116014

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-116014. EPSS is 0.43%. Act only if a listed version of open62541 1.5.0 before 1.5.7 is installed.

Which versions are affected?

Compare what you have installed with 1.4.11.1-1, 1.4.18-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-190: Integer Overflow. EPSS 0.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 24, 2026 · EUVD

    Detected

    open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.

  2. Oct 25, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.

  3. Oct 29, 2026 · EUVD

    Updated

    open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.

Sources

  • CVE.orgVulnerability recordCVE-2026-116014

    open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing de

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-116014

    30-day exploitation probability 0.43%

    first.org
  • EUVDVulnerability recordEUVD-2026-109272

    open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing de

    euvd.enisa.europa.eu
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-116014
    osv.dev
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-116014
    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • EUVDOct 29, 2026
  • Trivy Vulnerability DBOct 25, 2026
  • OpenSSF OSV / OSV ScannerOct 25, 2026
  • CVE.orgOct 24, 2026