CVE-2026-31164
CVE-2026-31164
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the pppoeMtu parameter to /cgi-bin/cstecgi.cgi.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| a3300r_firmware totolink |
17.0.0cu.557_b20221024 (affected, custom)
Configuration dependent This product alone does not establish exposure; review the source applicability configuration. |
NVD |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
NVD applicability configurations (1)
These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.
[
{
"negate": false,
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
]CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N | NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Exploit evidence
- https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection
exploit · [email protected] - https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection
exploit · 134c704f-9b21-4f2e-91b3-4a467353bcc0
References
- https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection[email protected] · Exploit, Third Party Advisory
- https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection134c704f-9b21-4f2e-91b3-4a467353bcc0 · Exploit, Third Party Advisory
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