High severity · published Nov 30, 2023
CVE-2023-5909
Improper Validation of Certificate with Host Mismatch in PTC KEPServerEx
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IG
Industrial Gateway Server · GE Gigital
through 7.614 · source: vendor, NVD
KE
KEPServer Enterprise · Rockwell Automation
through 6.14.263.0 · source: vendor, NVD
KE
KEPServerEX · PTC
through 6.14.263.0 · source: vendor
OP
OPC-Aggregator · PTC
through 6.14 · source: vendor, NVD
TS
TOP Server · Software Toolbox
through 6.14.263.0 · source: vendor, NVD
TI
ThingWorx Industrial Connectivity · PTC
All versions · source: vendor, NVD
TK
ThingWorx Kepware Edge · PTC
through 1.7 · source: vendor, NVD
TK
ThingWorx Kepware Server · PTC
through 6.14.263.0 · source: vendor, NVD
KE
Keepserverex · Ptc
through 6.14.263.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-5909
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-5909
Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-334-03
More from Industrial Gateway Server
9.1
CVE-2023-5908
Heap Based Buffer Overflow in PTC KEPServerEx