Description
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the week parameter to /cgi-bin/cstecgi.cgi.
Published: 2026-04-23
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Remote Command Execution
Action: Apply Patch
AI Analysis

Impact

This vulnerability arises from improper handling of the week parameter in the cgi script, enabling attackers to inject and execute arbitrary system commands. This flaw permits unauthorized command execution, potentially compromising the device, data, and network integrity. The weakness is a command injection flaw classified as CWE-77.

Affected Systems

The vulnerable firmware is ToToLink A3300R, version 17.0.0cu.557_B20221024. Devices running this firmware are susceptible; other firmware revisions are not referenced.

Risk and Exploitability

The CVSS base score of 6.5 indicates a medium severity risk, while the EPSS score of less than 1% suggests low current exploitation likelihood. It is not listed in the CISA KEV catalog. The vulnerability can be triggered via HTTP requests to /cgi-bin/cstecgi.cgi supplying a crafted week parameter, making it a remote attack vector that does not require privileged local access. The impact is full command execution under the web service's privileges, potentially escalating to full device compromise.

Generated by OpenCVE AI on April 28, 2026 at 07:49 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest firmware update from ToToLink that addresses the command injection flaw.
  • Limit access to the /cgi-bin/cstecgi.cgi endpoint to trusted IP addresses or networks through firewall rules.
  • Validate and sanitize all input to the week parameter to prevent injection, or implement parameter whitelisting.

Generated by OpenCVE AI on April 28, 2026 at 07:49 UTC.

Tracking

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Advisories

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History

Tue, 28 Apr 2026 08:15:00 +0000

Type Values Removed Values Added
Title Command Injection via Week Parameter in ToToLink A3300R Firmware

Mon, 27 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Totolink
Totolink a3300r
Totolink a3300r Firmware
CPEs cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
Vendors & Products Totolink
Totolink a3300r
Totolink a3300r Firmware

Thu, 23 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-77
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Apr 2026 18:45:00 +0000

Type Values Removed Values Added
Description An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the week parameter to /cgi-bin/cstecgi.cgi.
References

Subscriptions

Totolink A3300r A3300r Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-23T18:55:53.949Z

Reserved: 2026-03-09T00:00:00.000Z

Link: CVE-2026-31169

cve-icon Vulnrichment

Updated: 2026-04-23T18:55:48.663Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-23T19:17:25.143

Modified: 2026-04-27T14:55:28.707

Link: CVE-2026-31169

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T08:00:14Z

Weaknesses