CVE-2026-18785
Description
A flaw was found in open62541. A local attacker can exploit a use-after-free vulnerability in the UA_Client_getRemoteDataTypes function by performing a specific manipulation. This could potentially lead to limited information disclosure, data corruption, or a Denial of Service (DoS).
Statement
This Moderate severity use-after-free flaw in open62541 allows a local attacker to trigger a crash or potentially corrupt data through specific manipulation of the UA_Client_getRemoteDataTypes function. While publicly disclosed, exploitation requires local access and specific conditions, limiting its broader impact on typical Red Hat deployments.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
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