open62541 up to 1.5.5 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k2.30+

Summaryinfo

A vulnerability classified as problematic has been found in open62541 up to 1.5.5. Affected by this issue is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. This manipulation causes use after free. This vulnerability appears as CVE-2026-82623. The attack may be initiated remotely. In addition, an exploit is available. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

Detailsinfo

A vulnerability was found in open62541 up to 1.5.5. It has been declared as problematic. 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 with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-82623. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/30/2026 Advisory disclosed
08/30/2026 +0 days VulDB entry created
08/30/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 8199
Status: Not defined

CVE: CVE-2026-82623 (🔒)
GCVE (CVE): GCVE-0-2026-82623
GCVE (VulDB): GCVE-100-397123
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/30/2026 10:09
Changes: 08/30/2026 10:09 (57)
Complete: 🔍
Submitter: VULL
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #893207: open62541 Project open62541 1.5.5 Use After Free (by VULL)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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