How severe is CVE-2023-51034?

CVE-2023-51034 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-2023-51034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51034?

CVE-2023-51034 affects Totolink Ex1200l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51034?

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-2023-51034 published?

CVE-2023-51034 was published on 2023-12-22 and last updated on 2026-06-17.

CVE-2023-51034

CVE-2023-51034 is a critical-severity vulnerability in Totolink Ex1200l 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. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Totolink Ex1200l Firmware
Published: 2023-12-22
Last modified: 2026-06-17

Description

TOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi UploadFirmwareFile interface.

Frequently asked questions

What is CVE-2023-51034?: TOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi UploadFirmwareFile interface.
How severe is CVE-2023-51034?: CVE-2023-51034 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-2023-51034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51034?: CVE-2023-51034 affects Totolink Ex1200l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51034?: 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-2023-51034 published?: CVE-2023-51034 was published on 2023-12-22 and last updated on 2026-06-17.

References

https://815yang.github.io/2023/12/12/ex1200l/totolink_ex1200L_UploadFirmwareFile/

Affected products (1)

cpe:2.3:o:totolink:ex1200l_firmware:9.3.5u.6146_b20201023:*:*:*:*:*:*:*

More vulnerabilities in Totolink Ex1200l Firmware

CVE-2023-51035 — Critical (CVSS 9.8): TOTOLINK EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution on the cstecgi.cgi NTPSyncWithHost…
CVE-2023-51033 — Critical (CVSS 9.8): TOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi setOpModeCfg…
CVE-2024-7909 — High (CVSS 8.8): A vulnerability has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023 and classified as critical. Affected by this…
CVE-2024-7908 — High (CVSS 8.8): A vulnerability, which was classified as critical, was found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected is the…
CVE-2024-7338 — High (CVSS 8.8): A vulnerability, which was classified as critical, was found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. This affects…
CVE-2024-7337 — High (CVSS 8.8): A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected…

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