CVE-2026-1949: Delta Electronics AS320T stack buffer overflow in web service

CVE-2026-1949 · Severity: critical · CVSS 9.8 · Published 2026-04-24

A critical vulnerability exists in the Delta Electronics AS320T, a programmable logic controller (PLC) used in industrial automation. An attacker can remotely exploit a flaw in the device's web management interface to gain full control over the system. This could lead to unauthorized access to industrial processes, data theft, or a complete shutdown of operations.

Technologies: Deltaww As320t, Deltaww As320t Firmware. Vendors: Deltaww.

Quick answers

Is CVE-2026-1949 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-1949 being exploited in the wild.
How severe is CVE-2026-1949?
Critical severity, with a CVSS score of 9.8, published 24 April 2026.
Which products and versions are affected?
Delta Electronics AS320T firmware up to (excluding) 1.16.
Is there a fix for CVE-2026-1949?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-1949 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-1949?
Check whether you run Deltaww As320t or Deltaww As320t Firmware. 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.

Technical details

A stack-based buffer overflow vulnerability (CWE-131) exists in the web service component of Delta Electronics AS320T devices. The flaw is located within the GET/PUT request handler, where the application incorrectly calculates buffer sizes on the stack. A remote, unauthenticated attacker can exploit this by sending specially crafted HTTP requests over the network. Successful exploitation can lead to arbitrary code execution with high privileges, potentially resulting in a full system compromise. The vulnerability is addressed in firmware version 1.16.

Affected products

  • Delta Electronics AS320T firmware up to (excluding) 1.16

Timeline

  • 2026-04-24: disclosed
  • 2026-04-24: advisory: Vendor advisory Delta-PCSA-2026-00006 released

References

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