CVE-2026-18785

MEDIUM 5.3

o6 open62541 client_types_custom.c UA_Client_getRemoteDataTypes use after free

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-416 CWE-119
Vendor	o6
Product	open62541
Published	Aug 4, 2026
Last Updated	Aug 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

o6 / open62541

ca356b088ada7dee824d1b4acd07c1ff07ce242b

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/385787 vuldb.com: https://vuldb.com/vuln/385787/cti vuldb.com: https://vuldb.com/cve/CVE-2026-18785 vuldb.com: https://vuldb.com/submit/857052 github.com: https://github.com/open62541/open62541/issues/8131 github.com: https://github.com/gff-cw/information/issues/12

Credits

Chuan Wei (SCU) 🔍 VULL (VulDB User) SCU_1CP (VulDB User) VulDB CNA Team