CVE-2026-82623CWE-119CWE-416

CVE-2026-82623

Medium · published August 31, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
52.7
In the wild
Unconfirmed
What it is

A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00701 · 52.7th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-416 · Use After Free
Published
2026-08-31T11:17Z
References (7)
https://github.com/open62541/open62541/ · [email protected]https://github.com/open62541/open62541/issues/8199 · [email protected]https://vuldb.com/cve/CVE-2026-82623 · [email protected]https://vuldb.com/submit/893207 · [email protected]https://vuldb.com/vuln/397123 · [email protected]https://vuldb.com/vuln/397123/cti · [email protected]https://vuldb.com/submit/893207 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 01 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 31 AUG 06:15Z
    open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free
    cvelistv5