CVE-2026-1548

Name: CVE-2026-1548
Creator: NVD / NIST
Published: 2026-01-28T23:15:50.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.1/10EPSS 3.10%

Last modified Jun 17, 2026

CVE-2026-1548 is a low-severity vulnerability rated 2.1/10 on the CVSS scale. A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 3.10% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

2.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

3.10%

86.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A7000r Firmware	4.1cu.4154

References

https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.mdExploit, Third Party Advisory
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md#pocExploit
https://vuldb.com/?ctiid.343232Permissions Required, VDB Entry
https://vuldb.com/?id.343232Third Party Advisory, VDB Entry
https://vuldb.com/?submit.739715Third Party Advisory, VDB Entry
https://www.totolink.net/Product
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.mdExploit, Third Party Advisory

Timeline

Published: Jan 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-1548?

How severe is CVE-2026-1548?

CVE-2026-1548 has a CVSS score of 2.1/10 (LOW severity). The EPSS model estimates a 3.10% probability of exploitation in the next 30 days.

How do I fix CVE-2026-1548?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-1548?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST