How severe is CVE-2026-1327?

CVE-2026-1327 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-1327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1327?

CVE-2026-1327 affects Totolink Nr1800x Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1327?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1327 have an EU (EUVD) identifier?

Yes. CVE-2026-1327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4146.

When was CVE-2026-1327 published?

CVE-2026-1327 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2026-1327

CVE-2026-1327 is a medium-severity vulnerability in Totolink Nr1800x Firmware with a CVSS 3.x base score of 6.3. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4146
Weakness: CWE-74
Affected product: Totolink Nr1800x Firmware
Published: 2026-01-22
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Such manipulation of the argument command leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2026-1327?: A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Such manipulation of the argument command leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.
How severe is CVE-2026-1327?: CVE-2026-1327 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-1327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1327?: CVE-2026-1327 affects Totolink Nr1800x Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1327?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1327 have an EU (EUVD) identifier?: Yes. CVE-2026-1327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4146.
When was CVE-2026-1327 published?: CVE-2026-1327 was published on 2026-01-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6279_b20210910:*:*:*:*:*:*:*

More vulnerabilities in Totolink Nr1800x Firmware

CVE-2025-45841 — Critical (CVSS 9.8): TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the text…
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CVE-2022-41525 — Critical (CVSS 9.8): TOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a command injection vulnerability via the OpModeCfg…
CVE-2022-41522 — Critical (CVSS 9.8): TOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain an unauthenticated stack overflow via the "main"…
CVE-2022-41518 — Critical (CVSS 9.8): TOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a command injection vulnerability via the…

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