Open62541 vulnerabilities
We track 2 vulnerabilities in Open62541 products. 2 are rated high or critical, and none are known to be exploited. The most recent was published on October 24, 2026.
2vulnerabilities
0critical
2high
0exploited
7.8average CVSS score
Latest Open62541 vulnerabilities
- 8.1 High severity
open62541: Integer Overflow or Wraparound
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_getRemoteDat
- 7.5 High severity
open62541/open62541: Allocation of Resources Without Limits or Throttling
The package open62541/open62541 before 1.2.5, from 1.3-rc1 and before 1.3.1 are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exp