CVE-2026-18582: Free of Memory not on the Heap in mz-automation libiec61850
A security vulnerability exists in mz-automation libiec61850 versions 1.6.0 and 1.6.1 in the Reporting_RCBWriteAccessHandler function. The flaw causes a free of memory not on the heap, which can be triggered remotely. Exploit code has been publicly released. Upgrading to version 1.6.2 resolves the issue.
AI Analysis
Technical Summary
CVE-2026-18582 is a vulnerability in the mz-automation libiec61850 library affecting the Report Sending Path Handler component, specifically the Reporting_RCBWriteAccessHandler function in src/iec61850/server/mms_mapping/reporting.c. The issue involves freeing memory not allocated on the heap, which can be exploited remotely without authentication or user interaction. Public exploit code is available. The vulnerability affects versions 1.6.0 and 1.6.1 and is fixed in version 1.6.2.
Potential Impact
Successful exploitation can lead to undefined behavior due to improper memory deallocation, potentially causing application crashes or other memory corruption effects. The vulnerability is remotely exploitable without privileges or user interaction. The CVSS 4.0 base score is 6.9 (medium severity), indicating a significant security risk but not critical.
Mitigation Recommendations
Upgrade mz-automation libiec61850 to version 1.6.2 or later, which contains the patch identified by commit 5b2a69f44256b8548927d8afdd7ac5f5381abe1e. This upgrade fully resolves the vulnerability. No other mitigations are indicated.
CVE-2026-18582: Free of Memory not on the Heap in mz-automation libiec61850
Description
A security vulnerability exists in mz-automation libiec61850 versions 1.6.0 and 1.6.1 in the Reporting_RCBWriteAccessHandler function. The flaw causes a free of memory not on the heap, which can be triggered remotely. Exploit code has been publicly released. Upgrading to version 1.6.2 resolves the issue.
CVSS v4.0
Score 6.9medium
Affected software
pkg:github/mz-automation/libiec61850cpe:2.3:a:mz-automation:libiec61850:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18582 is a vulnerability in the mz-automation libiec61850 library affecting the Report Sending Path Handler component, specifically the Reporting_RCBWriteAccessHandler function in src/iec61850/server/mms_mapping/reporting.c. The issue involves freeing memory not allocated on the heap, which can be exploited remotely without authentication or user interaction. Public exploit code is available. The vulnerability affects versions 1.6.0 and 1.6.1 and is fixed in version 1.6.2.
Potential Impact
Successful exploitation can lead to undefined behavior due to improper memory deallocation, potentially causing application crashes or other memory corruption effects. The vulnerability is remotely exploitable without privileges or user interaction. The CVSS 4.0 base score is 6.9 (medium severity), indicating a significant security risk but not critical.
Mitigation Recommendations
Upgrade mz-automation libiec61850 to version 1.6.2 or later, which contains the patch identified by commit 5b2a69f44256b8548927d8afdd7ac5f5381abe1e. This upgrade fully resolves the vulnerability. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-02T19:14:04.727Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6ff36fbf32cb7a34c3d847
Added to database: 08/03/2026, 01:48:31 UTC
Last enriched: 08/03/2026, 02:07:44 UTC
Last updated: 08/03/2026, 02:07:44 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.