Description
A vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, in which an unexpected return value from the authentication routine is later on processed as a legitimate value, resulting in an authentication bypass.
References (3)
Core 3
Core References
Third Party Advisory
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json
Various Sources
https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate
Third Party Advisory, US Government Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10
Scores
CVSS v3
8.6
EPSS
0.0011
EPSS Percentile
28.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-394
Status
published
Products (3)
copeland/xweb_300d_pro_firmware
< 1.12.1
copeland/xweb_500b_pro_firmware
< 1.12.1
copeland/xweb_500d_pro_firmware
< 1.12.1
Published
Feb 27, 2026
Tracked Since
Feb 27, 2026