How severe is CVE-2026-1548?

CVE-2026-1548 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-2026-1548 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1548?

CVE-2026-1548 affects Totolink A7000r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1548?

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

Does CVE-2026-1548 have an EU (EUVD) identifier?

Yes. CVE-2026-1548 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4976.

When was CVE-2026-1548 published?

CVE-2026-1548 was published on 2026-01-28 and last updated on 2026-06-17.

CVE-2026-1548

CVE-2026-1548 is a medium-severity vulnerability in Totolink A7000r 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 3% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4976
Weakness: CWE-77
Affected product: Totolink A7000r Firmware
Published: 2026-01-28
Last modified: 2026-06-17

Description

A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2026-1548?: A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published and may be used.
How severe is CVE-2026-1548?: CVE-2026-1548 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-2026-1548 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1548?: CVE-2026-1548 affects Totolink A7000r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1548?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1548 have an EU (EUVD) identifier?: Yes. CVE-2026-1548 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4976.
When was CVE-2026-1548 published?: CVE-2026-1548 was published on 2026-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:*

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