CVE-2023-31729

CRITICAL

TOTOLINK A3300R v17.0.0cu.557 is vulnerable to Command Injection via /cgi-bin/cstecgi.cgi.

Affects 2 products across 1 vendor.

CVSS 3.19.8
EPSS1.3%
Percentile71th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-77: Command Injection

Attacker injects operating system commands through application inputs passed to a shell or system call.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-77
CAPEC-76 Manipulating Web Input to File System Calls
via CWE-77
CAPEC-15 Command Delimiters
via CWE-77
CAPEC-40 Manipulating Writeable Terminal Devices
via CWE-77
CAPEC-75 Manipulating Writeable Configuration Files
via CWE-77
Show all 8
via CWE-77
via CWE-77
via CWE-77

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

TOTOLINK A3300R v17.0.0cu.557 is vulnerable to Command Injection via the /cgi-bin/cstecgi.cgi endpoint, which could allow an attacker to execute arbitrary commands on the device.

BSID: BS-2023-GLOBAL-058938-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2023-31729?
TOTOLINK A3300R v17.0.0cu.557 is vulnerable to Command Injection via the /cgi-bin/cstecgi.cgi endpoint, which could allow an attacker to execute arbitrary commands on the device.
What is the CVSS score for CVE-2023-31729?
CVE-2023-31729 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 1.3%.
Is CVE-2023-31729 actively exploited?
No confirmed active exploitation of CVE-2023-31729 as of 2026-09-25.
How do I remediate CVE-2023-31729?
Priority: IMMEDIATE.
What systems are affected by CVE-2023-31729?
CVE-2023-31729 affects Totolink A3300R.
Vulnerability Details
CVE IDCVE-2023-31729
BSIDBS-2023-GLOBAL-058938-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2023-05-18
Last Modified2026-07-09
ICS Relevance15%
Weakness (CWE)
Command Injection
SourceNVD
Official Description

TOTOLINK A3300R v17.0.0cu.557 is vulnerable to Command Injection via /cgi-bin/cstecgi.cgi.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability exists in the /cgi-bin/cstecgi.cgi script, where user input is not properly sanitized before being used in system commands. An attacker can exploit this by sending a specially crafted request to the vulnerable endpoint.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Totolink A3300R (device & firmware) 17.0.0cu.557
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 1247 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hashe190477a25130519c4e20ede1b9462f70b72a425101080df53f0b0ac0fd62a356c2ba9497fb1c57daa7be9c3ccd594e1168ed48e4821859050f984fb37c49be5
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