Description
An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the url 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

The flaw is a command injection vulnerability that allows attackers to execute arbitrary commands on the device by manipulating the URL parameter sent to /cgi-bin/cstecgi.cgi. Attackers could gain full system control, compromising confidentiality, integrity, and availability.

Affected Systems

The vulnerability affects Totolink A3300R routers running firmware version 17.0.0cu.557_B20221024. No other affected product versions are listed.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate risk. The EPSS score of <1% suggests a low probability that the vulnerability will be exploited today, and it is not listed in the CISA KEV catalog. The likely attack vector is inferred to be remote over the web interface, where an attacker could craft a malicious URL and send it to the vulnerable /cgi-bin/cstecgi.cgi without authentication if the router permits unauthenticated or easily brute‑forced access.

Generated by OpenCVE AI on April 28, 2026 at 15:08 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update device firmware to a version that fixes the command injection issue or apply the vendor's security patch if available.
  • If a fixed firmware is unavailable, block or disable remote access to /cgi-bin/cstecgi.cgi, or restrict web management access to trusted IP ranges only.
  • Monitor web server logs for suspicious requests to /cgi-bin/cstecgi.cgi and review command execution patterns to detect possible exploitation attempts.

Generated by OpenCVE AI on April 28, 2026 at 15:08 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 28 Apr 2026 15:30:00 +0000

Type Values Removed Values Added
Title URL Parameter Command Injection in Totolink A3300R Firmware

Fri, 24 Apr 2026 15:15:00 +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 18:15:00 +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 url parameter to /cgi-bin/cstecgi.cgi.
References

Subscriptions

Totolink A3300r A3300r Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-23T18:43:47.307Z

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

Link: CVE-2026-31171

cve-icon Vulnrichment

Updated: 2026-04-23T18:43:41.000Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-23T18:16:24.497

Modified: 2026-04-24T15:12:50.720

Link: CVE-2026-31171

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T15:15:34Z

Weaknesses