CVE-2026-20797
Modified
Modified - Updated After Analysis
Stack-Based Buffer Overflow in XWEB Pro API Causes Crash
Publication date: 2026-02-27
Last updated on: 2026-05-10
Assigner: ICS-CERT
Description
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 Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| copeland | xweb_300d_pro_firmware | to 1.12.1 (inc) |
| copeland | xweb_500d_pro_firmware | to 1.12.1 (inc) |
| copeland | xweb_500b_pro_firmware | to 1.12.1 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a stack-based buffer overflow found in an API route of XWEB Pro version 1.12.1 and earlier. It allows unauthenticated attackers to cause stack corruption, which can lead to the termination of the program.
How can this vulnerability impact me? :
The vulnerability can cause the affected program to terminate unexpectedly due to stack corruption. This denial of service could disrupt normal operations and availability of the service.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
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