What’s Vulnerable › Vulnerabilities

CVE-2020-12502: Pepperl+Fuchs improper authorization affects multiple Comtrol RocketLinx products

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-15 · updated 2026-06-17
• Weakness: CWE-352

Description

Improper Authorization vulnerability of Pepperl+Fuchs P+F Comtrol RocketLinx ES7510-XT, ES8509-XT, ES8510-XT, ES9528-XTv2, ES7506, ES7510, ES7528, ES8508, ES8508F, ES8510, ES8510-XTE, ES9528/ES9528-XT (all versions) and ICRL-M-8RJ45/4SFP-G-DIN, ICRL-M-16RJ45/4CP-G-DIN FW 1.2.3 and below is prone to unauthenticated device administration.

Affected products

• Korenix Jetnet 4510 Firmware: all versions
• Korenix Jetnet 4706 Firmware: all versions
• Korenix Jetnet 4706F Firmware: all versions
• Korenix Jetnet 5010 Firmware: all versions
• Korenix Jetnet 5310 Firmware: all versions
• Korenix Jetnet 5428G-20Sfp Firmware: all versions
• Korenix Jetnet 5810G Firmware: all versions
• Korenix Jetnet 6095 Firmware: all versions
• Pepperl-Fuchs Es7506 Firmware: all versions
• Pepperl-Fuchs Es7510-Xt Firmware: all versions
• Pepperl-Fuchs Es7510 Firmware: all versions
• Pepperl-Fuchs Es7528 Firmware: all versions
• Pepperl-Fuchs Es8508 Firmware: all versions
• Pepperl-Fuchs Es8508F Firmware: all versions
• Pepperl-Fuchs Es8509-Xt Firmware: all versions
• Pepperl-Fuchs Es8510-Xt Firmware: all versions
• Pepperl-Fuchs Es8510-Xte Firmware: all versions
• Pepperl-Fuchs Es8510 Firmware: all versions
• Pepperl-Fuchs Es9528-Xt Firmware: all versions
• Pepperl-Fuchs Es9528-Xtv2 Firmware: all versions
• Pepperl-Fuchs Es9528 Firmware: all versions
• Pepperl-Fuchs Icrl-M-16Rj45/4Cp-G-Din Firmware: through 1.2.3; before 1.4.0 — fixed in 1.4.0
• Pepperl-Fuchs Icrl-M-8Rj45/4Sfp-G-Din Firmware: through 1.2.3; before 1.4 — fixed in 1.4

How to fix

Upgrade to a fixed version: Pepperl-Fuchs Icrl-M-16Rj45/4Cp-G-Din Firmware 1.4.0; Pepperl-Fuchs Icrl-M-8Rj45/4Sfp-G-Din Firmware 1.4. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/162903/Korenix-CSRF-Backdoor-Accounts-Command-Injection-Missing-Authentication.html
• http://packetstormsecurity.com/files/165875/Korenix-Technology-JetWave-CSRF-Command-Injection-Missing-Authentication.html
• http://seclists.org/fulldisclosure/2021/Jun/0
• https://cert.vde.com/de-de/advisories/vde-2020-040
• https://cert.vde.com/en-us/advisories/vde-2020-053
• https://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-korenix-technology-westermo-pepperl-fuchs/
• http://packetstormsecurity.com/files/162903/Korenix-CSRF-Backdoor-Accounts-Command-Injection-Missing-Authentication.html
• http://packetstormsecurity.com/files/165875/Korenix-Technology-JetWave-CSRF-Command-Injection-Missing-Authentication.html
• http://seclists.org/fulldisclosure/2021/Jun/0
• https://cert.vde.com/de-de/advisories/vde-2020-040
• https://cert.vde.com/en-us/advisories/vde-2020-053
• https://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-korenix-technology-westermo-pepperl-fuchs/

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