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Fencer Vulns
high 8.0

CVE-2026-21389 json

Copeland XWEB and XWEB Pro OS Command Injection

published 2026-02-27 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8946

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker to achieve remote code execution on the system by injecting malicious input into the request body sent to the contacts import route.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-057-10 updated cvss 8.0

Copeland XWEB and XWEB Pro

  • Copeland XWEB 300D PRO <=1.12.1 Copeland XWEB 500B PRO <=1.12.1 Copeland XWEB 500D PRO <=1.12.1
    affected: mitigation “Alternatively, a user logged into an XWEB Pro with internet access can update XWEB Pro directly from Copeland servers via the menu SYSTEM -- Updates | Network.” webapps.copeland.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
8 mo ago

Exploit prediction

1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Copeland Copeland XWEB 300D PRO
  • Copeland Copeland XWEB 500D PRO
  • Copeland Copeland XWEB 500B PRO

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.