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Fencer Vulns
critical 9.6

CVE-2023-3526 json

PHOENIX CONTACT: Cross-site Scripting vulnerability in TC ROUTER, TC CLOUD CLIENT and CLOUD CLIENT devices

published 2023-08-08 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44183

cvss
9.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

In PHOENIX CONTACTs TC ROUTER and TC CLOUD CLIENT in versions prior to 2.07.2 as well as CLOUD CLIENT 1101T-TX/TX prior to 2.06.10 an unauthenticated remote attacker could use a reflective XSS within the license viewer page of the devices in order to execute code in the context of the user's browser.

Patch / fix

  • PHOENIX CONTACT CLOUD CLIENT 1101T-TX/TX 2.06.10
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G 2.07.2
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G ATT 2.07.2
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G VZW 2.07.2
  • PHOENIX CONTACT TC ROUTER 3002T-4G 2.07.2
  • PHOENIX CONTACT TC ROUTER 3002T-4G ATT 2.07.2
  • PHOENIX CONTACT TC ROUTER 3002T-4G VZW 2.07.2

Vendor advisories

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

cisa ICSA-23-250-02 updated cvss 9.6

Phoenix Contact TC ROUTER and TC CLOUD CLIENT

  • Phoenix Contact CLOUD CLIENT 1101T-TX/TX < 2.06.10
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC CLOUD CLIENT 1002-4G < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC CLOUD CLIENT 1002-4G ATT < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC CLOUD CLIENT 1002-4G VZW < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC ROUTER 3002T-4G < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC ROUTER 3002T-4G ATT < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net
  • Phoenix Contact TC ROUTER 3002T-4G VZW < 2.07.2
    affected: vendor fix, mitigation “Phoenix Contact has made the following fixed versions available and encourages users to download the latest version:” phoenixcontact.net

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
20 mo ago

Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

  • PHOENIX CONTACT CLOUD CLIENT 1101T-TX/TX
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G ATT
  • PHOENIX CONTACT TC CLOUD CLIENT 1002-4G VZW
  • PHOENIX CONTACT TC ROUTER 3002T-4G
  • PHOENIX CONTACT TC ROUTER 3002T-4G ATT
  • PHOENIX CONTACT TC ROUTER 3002T-4G VZW

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.