CVE-2026-49035CWE-122

Stack-based Buffer Overflow in MZ Automation libIEC61850

Critical · published July 23, 2026

CVSS v4.0
9.2
EPSS
1%
Percentile
48.7
In the wild
Unconfirmed
What it is

The affected product is vulnerable to a heap-based buffer overflow via a crafted MMS Initiate request. Remote code execution (RCE) has been demonstrated when ASLR is disabled; memory corruption or denial of service may occur in configurations where ASLR is enabled.

The record
Technical detail
CVSS v4.0
9.2 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00613 · 48.7th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-07-23T20:48Z
EPSS history
Timeline
  • 23 JUL 20:48Z
    Stack-based Buffer Overflow in MZ Automation libIEC61850
    cvelistv5