CVE-2026-20797Disclosure(copeland / xweb_300d_pro)

LOWCVSS 9.8 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-787CWE-121

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • xweb_300d_pro
  • xweb_300d_pro_firmware
  • xweb_500b_pro
  • xweb_500b_pro_firmware

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
xweb_300d_proxweb_300d_pro_firmwarexweb_500b_proxweb_500b_pro_firmwarexweb_500d_proxweb_500d_pro_firmware

1 version affected across 6 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-27: 2Technical Details · 2026-02-27: 202-27
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    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 termin… https://www.cve.org/CVERecord?id=CVE-2026-20797

    Post summary

    The entry announces CVE-2026-20797 as a stack-based buffer overflow in XWEB Pro that allows unauthenticated attackers to corrupt the stack.

    00000127
    56.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-20797 Stack-Based Buffer Overflow in XWEB Pro API Route Enables Unauthenticated Remote Crash https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20797

    Post summary

    The post announces a stack‑based buffer overflow in XWEB Pro’s API route that can crash the system for unauthenticated users, but it lacks PoC, exploit, patch, or active exploitation details.

    0000034
    4.0K followersView on X
CPE platform detail6 entries

6 of 6 entries

PartVendorProductVersionTarget SWTarget HW
HWcopelandxweb_300d_pro---
OScopelandxweb_300d_pro_firmware---
HWcopelandxweb_500b_pro---
OScopelandxweb_500b_pro_firmware---
HWcopelandxweb_500d_pro---
OScopelandxweb_500d_pro_firmware---

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