CVE-2023-38555: Fujitsu Si-r220d Firmware

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Authentication bypass vulnerability in Fujitsu network devices Si-R series and SR-M series allows a network-adjacent unauthenticated attacker to obtain, change, and/or reset configuration settings of the affected products. Affected products and versions are as follows: Si-R 30B all versions, Si-R 130B all versions, Si-R 90brin all versions, Si-R570B all versions, Si-R370B all versions, Si-R220D all versions, Si-R G100 V02.54 and earlier, Si-R G200 V02.54 and earlier, Si-R G100B V04.12 and earlier, Si-R G110B V04.12 and earlier, Si-R G200B V04.12 and earlier, Si-R G210 V20.52 and earlier, Si-R G211 V20.52 and earlier, Si-R G120 V20.52 and earlier, Si-R G121 V20.52 and earlier, and SR-M 50AP1 all versions.

Affected products

• Fujitsu Si-r220d Firmware: any version
• Fujitsu Si-r370b Firmware: any version
• Fujitsu Si-r570b Firmware: any version
• Fujitsu Si-R 130b Firmware: any version
• Fujitsu Si-R 30b Firmware: any version
• Fujitsu Si-R 90brin Firmware: any version
• Fujitsu Si-R g100 Firmware: up to and including 02.54
• Fujitsu Si-R g100b Firmware: up to and including 04.12
• Fujitsu Si-R g110b Firmware: up to and including 04.12
• Fujitsu Si-R g120 Firmware: up to and including 20.52
• Fujitsu Si-R g121 Firmware: up to and including 20.52
• Fujitsu Si-R g200 Firmware: up to and including 02.54
• Fujitsu Si-R g200b Firmware: up to and including 04.12
• Fujitsu Si-R g210 Firmware: up to and including 20.52
• Fujitsu Si-R g211 Firmware: up to and including 20.52
• Fujitsu Sr-M 50ap1 Firmware: any version

Published 2023-07-26. Last modified 2026-06-17.