CVE-2026-20797CRITICAL 9.8EPSS p51.0%

CVE-2026-20797CVE-2026-20797

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.78% probability of exploitation · percentile 51.0% · 2026-06-19T12:03:05Z
Published2026-02-27
Last modified2026-05-10

Underlying weaknesses· 2

CWE-787CWE-121

References

  1. https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json
  2. https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate
  3. https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10

2

TypeTargetConfidenceTier
WeaknessStack-based Buffer Overflowcwe-1210%live
WeaknessOut-of-bounds Writecwe-7870%live

Related by meaning· 6

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.