How severe is CVE-2026-1326?

CVE-2026-1326 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-2026-1326 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1326?

CVE-2026-1326 affects Totolink Nr1800x Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1326?

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

Does CVE-2026-1326 have an EU (EUVD) identifier?

Yes. CVE-2026-1326 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4150.

When was CVE-2026-1326 published?

CVE-2026-1326 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2026-1326

CVE-2026-1326 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% (87th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4150
Weakness: CWE-74
Affected product: Totolink Nr1800x Firmware
Published: 2026-01-22
Last modified: 2026-06-17

Description

A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. This vulnerability affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument Hostname causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Frequently asked questions

What is CVE-2026-1326?: A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. This vulnerability affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument Hostname causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
How severe is CVE-2026-1326?: CVE-2026-1326 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-2026-1326 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1326?: CVE-2026-1326 affects Totolink Nr1800x Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1326?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1326 have an EU (EUVD) identifier?: Yes. CVE-2026-1326 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4150.
When was CVE-2026-1326 published?: CVE-2026-1326 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…
CVE-2023-7220 — Critical (CVSS 9.8): A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue…
CVE-2023-36340 — Critical (CVSS 9.8): TOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a stack overflow via the http_host parameter in the…
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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