CVE-2026-18785

o6 open62541 client_types_custom.c UA_Client_getRemoteDataTypes use after free

MEDIUM
5.3
CVSS Score
Published: August 4, 2026 at 04:45 PM UTC
Updated: October 24, 2026 at 04:10 PM UTC
2 products affected across 2 vendorsOPEN62541OPEN62541

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A vulnerability was determined in o6 open62541 ca356b088ada7dee824d1b4acd07c1ff07ce242b. Impacted is the function UA_Client_getRemoteDataTypes of the file examples/custom_datatype/client_types_custom.c. Executing a manipulation can lead to use after free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. 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.

All versions
ca356b088ada7dee824d1b4acd07c1ff07ce242b

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/385787
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/385787/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-18785
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/857052
ExploitIssue Tracking
Source: cverecord
https://github.com/gff-cw/information/issues/12

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-416CWE-119

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