CVE-2026-20797

Copeland XWEB and XWEB Pro Stack-based Buffer Overflow

Medium · published February 27, 2026

CVSS v3.1
4.3
EPSS
1%
Percentile
55.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00773 · 55.2th percentile
Published
2026-02-27T01:03Z
EPSS history
Timeline
  • 27 FEB 01:03Z
    Copeland XWEB and XWEB Pro Stack-based Buffer Overflow
    cvelistv5