How severe is CVE-2023-51022?

CVE-2023-51022 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-51022 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51022?

CVE-2023-51022 affects Totolink Ex1800t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51022?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-51022 published?

CVE-2023-51022 was published on 2023-12-22 and last updated on 2026-06-17.

CVE-2023-51022

CVE-2023-51022 is a critical-severity vulnerability in Totolink Ex1800t Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Totolink Ex1800t Firmware
Published: 2023-12-22
Last modified: 2026-06-17

Description

TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘langFlag’ parameter of the setLanguageCfg interface of the cstecgi .cgi.

Frequently asked questions

What is CVE-2023-51022?: TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘langFlag’ parameter of the setLanguageCfg interface of the cstecgi .cgi.
How severe is CVE-2023-51022?: CVE-2023-51022 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-51022 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51022?: CVE-2023-51022 affects Totolink Ex1800t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51022?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-51022 published?: CVE-2023-51022 was published on 2023-12-22 and last updated on 2026-06-17.

References

https://815yang.github.io/2023/12/11/EX1800T/2/3/TOTOlinkEX1800T_V9.1.0cu.2112_B20220316setLanguageCfg-langFlag/

Affected products (1)

cpe:2.3:o:totolink:ex1800t_firmware:9.1.0cu.2112_b20220316:*:*:*:*:*:*:*

More vulnerabilities in Totolink Ex1800t Firmware

CVE-2024-34257 — Critical (CVSS 9.8): TOTOLINK EX1800T V9.1.0cu.2112_B20220316 has a vulnerability in the apcliEncrypType parameter that allows unauthorized…
CVE-2023-52026 — Critical (CVSS 9.8): TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via…
CVE-2023-51021 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘merge’…
CVE-2023-51020 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the…
CVE-2023-51019 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘key5g’…
CVE-2023-51018 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘opmode’…

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