CVE-2026-18784

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Source
https://cve.org/CVERecord?id=CVE-2026-18784
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18784.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-18784
Downstream
Published
2026-08-04T16:30:09Z
Modified
2026-08-14T03:51:36Z
Severity
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow
Details

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UA_Client_readNodeClassAttribute of the file src/client/ua_client_highlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

Database specific 
{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-119",
        "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18784.json"
}
References

Affected packages

Git / github.com/open62541/open62541

Affected ranges

Type
GIT
Repo
https://github.com/open62541/open62541
Events
Introduced
b90fbfac5ef484089447bf5e3fe6ad7baaaebada
Last Affected
3bdeed5dfe8309cecabf36e04afe956b7f72ebd8
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.5.0"
        },
        {
            "last_affected": "1.5.0"
        },
        {
            "introduced": "1.5.1"
        },
        {
            "last_affected": "1.5.1"
        },
        {
            "introduced": "1.5.2"
        },
        {
            "last_affected": "1.5.2"
        },
        {
            "introduced": "1.5.3"
        },
        {
            "last_affected": "1.5.3"
        },
        {
            "introduced": "1.5.4"
        },
        {
            "last_affected": "1.5.4"
        },
        {
            "introduced": "1.5.5"
        },
        {
            "last_affected": "1.5.5"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
v1.*
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18784.json"