CVE-2021-20716
Last modified
CVE-2021-20716 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition.. EPSS estimates a 3.18% chance of exploitation in the next 30 days.
Description
Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Buffalo | Bhr-4rv Firmware | <= 2.55 |
| Buffalo | Fs-G54 Firmware | <= 2.04 |
| Buffalo | Wbr2-B11 Firmware | <= 2.32 |
| Buffalo | Wbr2-G54 Firmware | <= 2.32 |
| Buffalo | Wbr2-G54-Kd Firmware | <= 2.32 |
| Buffalo | Wbr-B11 Firmware | <= 2.23 |
| Buffalo | Wbr-G54 Firmware | <= 2.23 |
| Buffalo | Wbr-G54l Firmware | <= 2.20 |
| Buffalo | Whr2-A54g54 Firmware | <= 2.25 |
| Buffalo | Whr2-G54 Firmware | <= 2.23 |
| Buffalo | Whr2-G54v Firmware | <= 2.55 |
| Buffalo | Whr3-Ag54 Firmware | <= 2.23 |
| Buffalo | Whr-G54 Firmware | <= 2.16 |
| Buffalo | Whr-G54-Nf Firmware | <= 2.10 |
| Buffalo | Wla2-G54 Firmware | <= 2.24 |
| Buffalo | Wla2-G54c Firmware | <= 2.24 |
| Buffalo | Wla-B11 Firmware | <= 2.20 |
| Buffalo | Wla-G54 Firmware | <= 2.20 |
| Buffalo | Wla-G54c Firmware | <= 2.20 |
| Buffalo | Wlah-A54g54 Firmware | <= 2.54 |
| Buffalo | Wlah-Am54g54 Firmware | <= 2.54 |
| Buffalo | Wlah-G54 Firmware | <= 2.54 |
| Buffalo | Wli2-Tx1-Ag54 Firmware | <= 2.53 |
| Buffalo | Wli2-Tx1-Amg54 Firmware | <= 2.53 |
| Buffalo | Wli2-Tx1-G54 Firmware | <= 2.20 |
| Buffalo | Wli3-Tx1-Amg54 Firmware | <= 2.53 |
| Buffalo | Wli3-Tx1-G54 Firmware | <= 2.53 |
| Buffalo | Wli-T1-B11 Firmware | <= 2.20 |
| Buffalo | Wli-Tx1-G54 Firmware | <= 2.20 |
| Buffalo | Wvr-G54-Nf Firmware | <= 2.02 |
| Buffalo | Wzr-G108 Firmware | <= 2.41 |
| Buffalo | Wzr-G54 Firmware | <= 2.41 |
| Buffalo | Wzr-Hp-G54 Firmware | <= 2.41 |
| Buffalo | Wzr-Rs-G54 Firmware | <= 2.55 |
| Buffalo | Wzr-Rs-G54hp Firmware | <= 2.55 |
References
- https://jvn.jp/en/vu/JVNVU90274525/index.htmlThird Party Advisory
- https://www.buffalo.jp/news/detail/20210427-02.htmlVendor Advisory
- https://jvn.jp/en/vu/JVNVU90274525/index.htmlThird Party Advisory
- https://www.buffalo.jp/news/detail/20210427-02.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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