Heap Based Buffer Overflow in PTC KEPServerEx
Noroxi assessment
Priority: Monitor (action score 36/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.96% (FIRST EPSS); higher than 61.3% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to the record, no fixed version is available yet.
Low priority for now. Update when a fix is released; follow the vendor's advisory.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
- Published
- Nov 30, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.9% · 61th percentile
- CWE
- CWE-122
Report tools
Action score
36
Monitor
Low priority for now.
- CVSS
- 36 / 40 · 9.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
CNA vs NVD score
- NVD
- 9.1
- CNA · icscert
- 9.1
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- No fixed version yet
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| ge | industrial gateway server | cpe:2.3:a:ge:industrial_gateway_server |
| ptc | keepserverex | cpe:2.3:a:ptc:keepserverex |
| ptc | opc-aggregator | cpe:2.3:a:ptc:opc-aggregator |
| ptc | thingworx industrial connectivity | cpe:2.3:a:ptc:thingworx_industrial_connectivity |
| ptc | thingworx kepware edge | cpe:2.3:a:ptc:thingworx_kepware_edge |
| ptc | thingworx kepware server | cpe:2.3:a:ptc:thingworx_kepware_server |
| rockwellautomation | kepserver enterprise | cpe:2.3:a:rockwellautomation:kepserver_enterprise |
| softwaretoolbox | top server | cpe:2.3:a:softwaretoolbox:top_server |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- ge industrial gateway serverup to 7.614 inclusive
- ptc keepserverexup to 6.14.263.0 inclusive
- ptc opc-aggregatorup to 6.14 inclusive
- ptc thingworx industrial connectivityall versions
- ptc thingworx kepware edgeup to 1.7 inclusive
- ptc thingworx kepware serverup to 6.14.263.0 inclusive
- rockwellautomation kepserver enterpriseup to 6.14.263.0 inclusive
- softwaretoolbox top serverup to 6.14.263.0 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.
GE Gigital Industrial Gateway Server
- up to and including 7.614affected
PTC KEPServerEX
- up to and including 6.14.263.0affected
PTC OPC-Aggregator
- up to and including 6.14affected
PTC ThingWorx Industrial Connectivity
- All versionsaffected
PTC ThingWorx Kepware Edge
- up to and including 1.7affected
PTC ThingWorx Kepware Server
- up to and including 6.14.263.0affected
Rockwell Automation KEPServer Enterprise
- up to and including 6.14.263.0affected
Software Toolbox TOP Server
- up to and including 6.14.263.0affected
Same product
ge: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-27265KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All ver42Plan
- CVE-2022-2825This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX 6.11.718.0.40Plan
- CVE-2020-27267KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all vers38Monitor
Published before and after this one in the same product
- ← EarlierCVE-2020-27263Jan 13, 2021 · KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All ver38Monitor
- ← EarlierCVE-2022-2848Mar 29, 2023 · This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX 6.11.718.0.37Monitor
- Later →CVE-2023-5909Nov 30, 2023 · Improper Validation of Certificate with Host Mismatch in PTC KEPServerEx30Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Shawn Hoffmanfinder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2022-2848246 days apartThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPServerEX 6.11.718.0.37Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-122 · Heap-based Buffer OverflowCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.