What’s Vulnerable › Vulnerabilities

CVE-2023-5908: Heap Based Buffer Overflow in PTC KEPServerEx

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-30 · updated 2026-06-17
• Weakness: CWE-122

Description

KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.

Affected products

• GE Industrial Gateway Server: through 7.614
• PTC Keepserverex: through 6.14.263.0
• PTC OPC-Aggregator: through 6.14
• PTC ThingWorx Industrial Connectivity: all versions
• PTC ThingWorx Kepware Edge: through 1.7
• PTC ThingWorx Kepware Server: through 6.14.263.0
• Rockwell Automation KEPServer Enterprise: through 6.14.263.0
• Softwaretoolbox Top Server: through 6.14.263.0

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-334-03
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-334-03

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