Quick answers
- Is CVE-2026-48741 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48741 being exploited in the wild.
- How severe is CVE-2026-48741?
- High severity, with a CVSS score of 7.5, published 16 October 2026.
- Which products and versions are affected?
- MZ Automation libIEC61850 before 1.6.2.
- Is there a fix for CVE-2026-48741?
- Yes: fixed in 1.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-48741 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-48741?
- Check whether you run MZ Automation libIEC61850 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.6.2
Technical details
The alternateArrayAccess function in mms_read_service.c does not validate alternate-access sub-array ranges when numberOfElements exceeds zero, causing MmsValue_getElement to return NULL. This NULL pointer is then passed to MmsValue_isDeletable without a null check, triggering a NULL pointer dereference. A remote attacker can send a malicious MMS Read request over the network to crash an affected server, while the single-element error path handles invalid indices safely.
Affected products
- mz-automation libIEC61850 before 1.6.2
Timeline
- 2026-10-16: disclosed