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CVE-2026-20797— Copeland XWEB and XWEB Pro Stack-based Buffer Overflow

Quick assessment

Affected
Copeland Copeland XWEB 300D PRO
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Copeland XWEB 500D PRO和Copeland XWEB 500B PRO都是美国Copeland公司的一款先进的商用与工业制冷监控管理系统。 Copeland多款产品存在缓冲区错误漏洞，该漏洞源于API路由存在栈缓冲区溢出，可能导致栈损坏和程序终止。以下产品受到影响：Copeland XWEB 300D PRO,Copeland XWEB 500D PRO,Copeland XWEB 500B PRO。

CVSS 4.3 · Medium EPSS 0.81% · P55

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 3

VendorProduct Version RangeStatus
Copeland Copeland XWEB 300D PRO ≤ 1.12.1 affected
Copeland Copeland XWEB 500B PRO ≤ 1.12.1 affected
Copeland Copeland XWEB 500D PRO ≤ 1.12.1 affected
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I. Basic Information for CVE-2026-20797

Vulnerability Information
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Vulnerability Title
Copeland XWEB and XWEB Pro Stack-based Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Copeland多款产品 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Copeland XWEB 500D PRO和Copeland XWEB 500B PRO都是美国Copeland公司的一款先进的商用与工业制冷监控管理系统。 Copeland多款产品存在缓冲区错误漏洞，该漏洞源于API路由存在栈缓冲区溢出，可能导致栈损坏和程序终止。以下产品受到影响：Copeland XWEB 300D PRO,Copeland XWEB 500D PRO,Copeland XWEB 500B PRO。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Copeland Copeland XWEB 300D PRO 0 ~ 1.12.1 -
Copeland Copeland XWEB 500D PRO 0 ~ 1.12.1 -
Copeland Copeland XWEB 500B PRO 0 ~ 1.12.1 -

II. Public POCs for CVE-2026-20797

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-20797

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Vendor Advisories for CVE-2026-20797 (2)

Same Patch Batch · Copeland · 2026-02-27 · 23 CVEs total

CVE-2026-21718 10.0 CRITICAL Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm
CVE-2026-24663 9.0 CRITICAL Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25085 8.6 HIGH Copeland XWEB and XWEB Pro Unexpected Status Code or Return Value
CVE-2026-20902 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-23702 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-20764 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-3037 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-24452 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25037 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25721 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25105 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25196 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-20910 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-20742 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-21389 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-24695 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-24517 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-24689 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25195 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection
CVE-2026-25111 8.0 HIGH Copeland XWEB and XWEB Pro OS Command Injection

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Copeland XWEB 300D PRO
Same vendor: Copeland

V. Comments for CVE-2026-20797

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