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TI-2023-03574 Aliases CVE-2023-3825GHSA-m3jq-gg7x-47cq

Uncontrolled resource consumption in PTC KEPServerEX

Priority LOW 34CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

PTC’s KEPServerEX Versions 6.0 to 6.14.263 are vulnerable to being made to read a recursively defined object that leads to uncontrolled resource consumption. KEPServerEX uses OPC UA, a protocol which defines various object types that can be nested to create complex arrays. It does not implement a check to see if such an object is recursively defined, so an attack could send a maliciously created message that the decoder would try to decode until the stack overflowed and the device crashed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00757 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PTCKEPServerEX6.0 – 6.14.263—No fix listedCNA
  • KEPServerEX VendorPTC Affected 6.0 – 6.14.263 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kepware:kepserverex:*:*:*:*:*:*:*:*6.0.0 – 6.14.263VulnerableKepware
  • cpe:2.3:a:kepware:kepserverex:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.14.263 Vulnerable ·Kepware

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-3825
  2. 2026-10-03 Alias added: GHSA-m3jq-gg7x-47cq

References

Advisory 1

  • TI-2026-10780 Remote Code Execution (RCE) vulnerability in Windchill PDMlink KEVCVSS 4.0CRITICAL 9.3
  • TI-2023-00715 Improper array index validation in PTC ThingWorx Edge C-SDK CVSS 3.1CRITICAL 9.8
  • TI-2022-08956 PTC Axeda agent and Axeda Desktop Server Missing Authentication For Critical Function CVSS 3.1CRITICAL 9.8
  • TI-2020-16591 Stack-based buffer overflow in PTC Kepware KEPServerEX; ThingWorx Industrial… CVSS 3.1CRITICAL 9.8
  • TI-2022-02619 Stack-based buffer overflow in Kepware KEPServerEX CVSS 3.1CRITICAL 9.8
  • TI-2023-00714 Integer overflow in PTC ThingWorx Edge C-SDK CVSS 3.1CRITICAL 9.8
See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences