How severe is CVE-2026-36741?

CVE-2026-36741 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-36741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-36741?

CVE-2026-36741 affects U-speed T18-21k Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-36741?

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

Does CVE-2026-36741 have an EU (EUVD) identifier?

Yes. CVE-2026-36741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30044.

When was CVE-2026-36741 published?

CVE-2026-36741 was published on 2026-05-13 and last updated on 2026-06-30.

CVE-2026-36741

CVE-2026-36741 is a high-severity vulnerability in U-speed T18-21k Firmware with a CVSS 3.x base score of 7.2. 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-77.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30044
Weakness: CWE-77
Affected product: U-speed T18-21k Firmware
Published: 2026-05-13
Last modified: 2026-06-30

Description

U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Command Injection. The Network Time Protocol (NTP) configuration interface does not properly sanitize user-supplied input. An authenticated user with permission to configure NTP settings can inject arbitrary system commands through crafted input fields. These commands are executed with elevated privileges, leading to potential full system compromise.

Frequently asked questions

What is CVE-2026-36741?: U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Command Injection. The Network Time Protocol (NTP) configuration interface does not properly sanitize user-supplied input. An authenticated user with permission to configure NTP settings can inject arbitrary system commands through crafted input fields. These commands are executed with elevated privileges, leading to potential full system compromise.
How severe is CVE-2026-36741?: CVE-2026-36741 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-36741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-36741?: CVE-2026-36741 affects U-speed T18-21k Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-36741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-36741 have an EU (EUVD) identifier?: Yes. CVE-2026-36741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30044.
When was CVE-2026-36741 published?: CVE-2026-36741 was published on 2026-05-13 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:o:u-speed:t18-21k_firmware:1.0:*:*:*:*:*:*:*

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