CVE-2023-5908
Heap Based Buffer Overflow in PTC KEPServerEx
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Heap Based Buffer Overflow in PTC KEPServerEx
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
- Record
CVE-2023-5908- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2023-58181
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
- Record
EUVD-2023-58181- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m695-35xv-pjcm
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the...
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
- Record
GHSA-m695-35xv-pjcm- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-120, CWE-122
- Updated
- 2026-11-02
NVD
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
- Record
CVE-2023-5908- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-122, CWE-120
- Updated
- 2026-11-02
Affected products
- kepware kepserverex
- ptc kepserverex
- ptc keepserverex
- ptc opc-aggregator
- ptc thingworx industrial connectivity
- ptc thingworx kepware edge
- ptc thingworx kepware server
- ge industrial gateway server
- ge gigital industrial gateway server
- rockwell automation kepserver enterprise
- rockwellautomation kepserver enterprise
- software toolbox top server
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History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-5908 is a critical vulnerability (CVSS 9.1) in Kepware Kepserverex, published November 30, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. No source names a fixed version.