Bug 2509626 (CVE-2026-63559)

Summary: CVE-2026-63559 open62541: open62541: Information disclosure via integer overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in open62541. An integer overflow in the UA_Variant arrayDimensions product computation may allow a remote attacker to read memory outside of its allocated bounds. This could potentially lead to the disclosure of sensitive information.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2509793    
Bug Blocks:    

Description OSIDB Bzimport 2026-07-30 22:01:32 UTC 
An integer overflow in the UA_Variant arrayDimensions product 
computation in open62541 may allow a remote attacker to read 
out-of-bounds heap memory, potentially disclosing sensitive information.