synced 2 MIN AGO
01 Record

CVE-2023-5908

Heap Based Buffer Overflow in PTC KEPServerEx

CriticalPUBLISHEDCNA: icscert
CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

02 Description

Heap Based Buffer Overflow in PTC KEPServerEx

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.96% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 61.2% of scored records. A rank, not a probability.
NVD base score
9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-11-30 22:03Z2 YR AGO
Last updated
2024-08-02 08:14Z2 YR AGO
Reserved
2023-11-01
Assigning CNA
icscert
Record state
PUBLISHED
Severity
Critical (CVSS 9.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
Data version
5.1
Document digest
29317a652a5b521f2982260f0a331eaff0508f0c5b237dfcfb685616017c369d

05 Affected products

VendorProductVersionsPlatforms
PTCKEPServerEX0 to 6.14.263.0—
PTCThingWorx Kepware Server0 to 6.14.263.0—
PTCOPC-Aggregator0 to 6.14—
Rockwell AutomationKEPServer Enterprise0 to 6.14.263.0—
GE GigitalIndustrial Gateway Server0 to 7.614—
Software ToolboxTOP Server0 to 6.14.263.0—

06 References

07 Remediation

PTC has released and recommends users to update to the following versions: * KEPServerEX should upgrade to v6.15 or later * ThingWorx Kepware Server should upgrade to v6.15 or later * ThingWorx Industrial Connectivity should upgrade to ThingWorx Kepware Server v6.15 or later * OPC-Aggregator should upgrade to v6.15 or later * ThingWorx Kepware Edge: Upgrade to v1.8 or later Refer to secure configuration guide here https://www.ptc.com/en/support/refdoc/ThingWorx_Kepware_Server/6.15/ThingWorx%20Kepware%20Server%20Secure%20Deployment%20Guide If additional questions remain, please contact PTC Technical Support https://support.ptc.com/apps/case_logger_viewer/cs/auth/ssl/log For more information, see PTC's advisory https://www.ptc.com/en/support/article/CS405439 .