Totolink A3300R 17.0.0cu.557_b20221024 Parameter /cgi-bin/cstecgi.cgi setSmartQosCfg qos_up_bw command injection

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k3.51

Summaryinfo

A vulnerability marked as critical has been reported in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. This manipulation of the argument qos_up_bw causes command injection. This vulnerability is tracked as CVE-2026-5102. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in Totolink A3300R 17.0.0cu.557_b20221024 and classified as critical. Affected by this vulnerability is the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-5102. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/29/2026 Advisory disclosed
03/29/2026 +0 days VulDB entry created
03/29/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-5102 (🔒)
GCVE (CVE): GCVE-0-2026-5102
GCVE (VulDB): GCVE-100-354127
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/29/2026 19:56
Changes: 03/29/2026 19:56 (57)
Complete: 🔍
Submitter: LtzHuster2
Cache ID: 216:F46:103

Submitinfo

Accepted

  • Submit #779129: Totolink A3300R 17.0.0cu.557_b20221024 Command Injection (by LtzHuster2)

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