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Fencer Vulns
critical 9.3

CVE-2026-0667 json

CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability that could cause arbitrary code execution, denial of service an…

published 2026-07-29 3 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-50303

cvss
9.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability that could cause arbitrary code execution, denial of service and loss of confidentiality & integrity when communicating over the Modbus TCP protocol.

Vendor advisories

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

cisa ICSA-26-076-02 updated cvss 9.8

Schneider Electric SCADAPack and RemoteConnect

  • Schneider Electric RemoteConnect < R3.4.2
    affected: vendor fix, mitigation se.com
  • Schneider Electric SCADAPack™
    affected: mitigation se.com
  • Schneider Electric SCADAPack™ < R3.4.2 SCADAPack™ firmware < 9.12.2
    affected: vendor fix, mitigation se.com
  • Schneider Electric RemoteConnect R3.4.2 Schneider Electric SCADAPack™ R3.4.2 SCADAPack™ firmware 9.12.2
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Schneider Electric SCADAPack 47x
  • Schneider Electric SCADAPack 47xi
  • Schneider Electric SCADAPack 57x
  • Schneider Electric RemoteConnect

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions

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.