What’s Vulnerable › Vulnerabilities

CVE-2023-3825

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-31 · updated 2026-06-17
• Weakness: CWE-400

Description

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.

Affected products

• PTC KEPServerEX: from 6.0.0 through 6.14.263

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-02
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-02

Get alerted when CVE-2023-3825 or the next vulnerability affects your stack