CVE-2026-15690

open62541 Shared Client ua_client_connect.c responseReadNamespacesArray null pointer dereference

LOW
3.1
CVSS Score
Published: July 14, 2026 at 11:45 AM UTC
Updated: July 14, 2026 at 03:37 PM UTC
1 product affected across 1 vendorOPEN62541

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Severity
LOW3.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

A vulnerability was identified in open62541 up to 1.5.5. Affected by this issue is the function responseReadNamespacesArray of the file src/client/ua_client_connect.c of the component Shared Client Library. Such manipulation of the argument Server_NamespaceArray leads to null pointer dereference. The attack can be executed remotely. The attack requires a high level of complexity. The exploitation is known to be difficult. The exploit is publicly available and might be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/378237
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/378237/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-15690
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/855996
ExploitIssue Tracking
Source: cverecord
https://github.com/open62541/open62541/issues/8104

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.1LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-476CWE-404

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