CVE-2026-5103

2.1 lowEPSS 4.1%

Low (2.1) in totolink a3300r firmware. EPSS 4.1% chance of exploitation in the next 30 days.

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument enable causes command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

Severity

CVSS 4.0

2.1 low

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

CVSS 3.1

8.8 high

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

EPSS: 4.1% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWEs: CWE-77, CWE-74
Published: 2026-03-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

totolink:a3300r_firmware

References

https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_enable_cmd_inject
https://vuldb.com/submit/779140
https://vuldb.com/vuln/354128
https://vuldb.com/vuln/354128/cti
https://www.totolink.net/

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