CVE-2026-20797: WE-121 in Copeland Copeland XWEB 300D PRO
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.
AI Analysis
Technical Summary
This vulnerability involves a stack-based buffer overflow in an API route of Copeland XWEB 300D PRO versions 1.12.1 and prior. An unauthenticated attacker can exploit this flaw to cause stack corruption, resulting in the termination of the affected program. The CVSS 3.1 base score is 4.3, reflecting a medium severity with low attack complexity and no required privileges or user interaction. No patches or vendor advisories indicating remediation are currently available.
Potential Impact
Successful exploitation results in stack corruption and termination of the affected program, causing a denial of service condition. There is no evidence from the provided data that confidentiality or integrity are impacted. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor for updates from Copeland and consider limiting access to the vulnerable API route to trusted users or networks if possible.
CVE-2026-20797: WE-121 in Copeland Copeland XWEB 300D PRO
Description
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.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a stack-based buffer overflow in an API route of Copeland XWEB 300D PRO versions 1.12.1 and prior. An unauthenticated attacker can exploit this flaw to cause stack corruption, resulting in the termination of the affected program. The CVSS 3.1 base score is 4.3, reflecting a medium severity with low attack complexity and no required privileges or user interaction. No patches or vendor advisories indicating remediation are currently available.
Potential Impact
Successful exploitation results in stack corruption and termination of the affected program, causing a denial of service condition. There is no evidence from the provided data that confidentiality or integrity are impacted. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor for updates from Copeland and consider limiting access to the vulnerable API route to trusted users or networks if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-02-05T16:47:16.578Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69a0f2b332ffcdb8a2981608
Added to database: 02/27/2026, 01:26:11 UTC
Last enriched: 05/11/2026, 01:43:57 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 153
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