CVE-2026-18582 Memory corruption in libiec61850
Remote attackers can trigger a memory corruption vulnerability in the libiec61850 library, potentially causing denial of service or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18582?
CVE-2026-18582 is a medium-severity memory corruption vulnerability in mz-automation libiec61850, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in mz-automation libiec61850 up to 1.6.1. This vulnerability affects the function Reporting_RCBWriteAccessHandler of the file src/iec61850/server/mms_mapping/reporting.c of the component Report Sending Path Handler. The manipulation results in free of memory not on the heap. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to resolve this issue. The patch is identified as 5b2a69f44256b8548927d8afdd7ac5f5381abe1e. It is suggested to upgrade the affected component. The vendor was contacted early about this disclosure.
Weakness: CWE-590
Which versions are affected by CVE-2026-18582?
How do I fix CVE-2026-18582?
No fix has been published for CVE-2026-18582 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-18582 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18582 exists.
Sources
Also known as GHSA-vj8r-wqrg-59qf.