CVE-2026-5176

Name: CVE-2026-5176
Creator: NVD / NIST
Published: 2026-03-31T02:15:59.803+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2026-5176 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. Affected is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. Affected is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument provided results in command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

1.93%

77.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A3300r Firmware	17.0.0cu.557_b20221024

References

https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_rtLogServer_cmd_injectExploit, Third Party Advisory
https://vuldb.com/submit/779145Third Party Advisory, VDB Entry
https://vuldb.com/vuln/354244Third Party Advisory, VDB Entry
https://vuldb.com/vuln/354244/ctiPermissions Required, VDB Entry
https://www.totolink.net/Product

Timeline

Published: Mar 31, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5176?

How severe is CVE-2026-5176?

CVE-2026-5176 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5176?

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-2026-5176?

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

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Source: NVD / NIST