CVE-2026-19108 MZ Automation libiec61850 URCB Revalidation reporting.c deleteDataSetValuesShadowBuffer use after free
A local attacker can exploit a use-after-free flaw in libiec61850 to potentially execute code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19108?
CVE-2026-19108 is a medium-severity use after free vulnerability in MZ Automation libiec61850, published on 6 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c of the component URCB Revalidation. The manipulation results in use after free. The attack needs to be approached locally. The exploit has been made public and could be used. Upgrading to version 1.6.2 is sufficient to fix this issue. The patch is identified as 486fd57f3aed65bb9d636ff00f9ddce2e450b168. Upgrading the affected component is advised.
Which versions are affected by CVE-2026-19108?
How do I fix CVE-2026-19108?
No fix has been published for CVE-2026-19108 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-19108 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19108 exists.
Sources
Also known as GHSA-c2h4-j5j4-67wf.