CVE-2026-20797

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-20797
A stack based buffer overflow exists in an API route of XWEB Pro version 1.12.1 and prior, enabling unauthenticated attackers to cause stack corruption and a termination of the program.

4.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References
Link Resource
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json Third Party Advisory
https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate Product
https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10 Third Party Advisory US Government Resource
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:copeland:xweb_300d_pro:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:copeland:xweb_500d_pro:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:copeland:xweb_500b_pro:-:*:*:*:*:*:*:*
History

27 Feb 2026, 23:10

Type Values Removed Values Added
First Time Copeland
Copeland xweb 500b Pro Firmware
Copeland xweb 500b Pro
Copeland xweb 500d Pro
Copeland xweb 500d Pro Firmware
Copeland xweb 300d Pro
Copeland xweb 300d Pro Firmware
CPE cpe:2.3:h:copeland:xweb_500b_pro:-:*:*:*:*:*:*:*
cpe:2.3:h:copeland:xweb_500d_pro:-:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:copeland:xweb_300d_pro:-:*:*:*:*:*:*:*
CWE CWE-787
References () https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json - () https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json - Third Party Advisory
References () https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate - () https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate - Product
References () https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10 - () https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10 - Third Party Advisory, US Government Resource

27 Feb 2026, 14:06

Type Values Removed Values Added
Summary
  • (es) Existe un desbordamiento de búfer basado en pila en una ruta de API de XWEB Pro versión 1.12.1 y anteriores, lo que permite a atacantes no autenticados causar corrupción de pila y la terminación del programa.

27 Feb 2026, 02:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-27 02:16

Updated : 2026-02-27 23:10

NVD link : CVE-2026-20797

Mitre link : CVE-2026-20797

CVE.ORG link : CVE-2026-20797

JSON object : View

Products Affected

copeland

  • xweb_300d_pro
  • xweb_500d_pro_firmware
  • xweb_300d_pro_firmware
  • xweb_500d_pro
  • xweb_500b_pro
  • xweb_500b_pro_firmware
CWE
CWE-787

Out-of-bounds Write