Buffer overflow in Kepware Kepserverex
CVE-2023-3825
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Kepware Kepserverex
- Ptc Kepserverex — versions 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.cisa.gov/news-events/ics-advisories/icsa-23-208-02 (US Government Resource, Third Party Advisory, government-resource)
Frequently asked questions
- What is CVE-2023-3825?
- CVE-2023-3825 is a high-severity vulnerability in Kepware Kepserverex, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-07-31.
- How severe is CVE-2023-3825?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-3825 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.