Is there a public PoC exploit available for CVE-2026-5177?

Yes, a public proof-of-concept exploit is available for CVE-2026-5177. Prioritise patching immediately. EPSS: 0.7%.

Totolink A3300R CVE-2026-5177

Q: What is the CVSS score of CVE-2026-5177?

CVE-2026-5177 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.7%.

EUVD-2026-17281 LOW

Command Injection (CWE-77)

2026-03-31 VulDB

GHSA-mq3w-44cm-pfv8

Command Injection

2.1

CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

5.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Apr 06, 2026 - 15:22 vuln.today

Public exploit code

EUVD ID Assigned

Mar 31, 2026 - 02:30 euvd

EUVD-2026-17281

Analysis Generated

Mar 31, 2026 - 02:30 vuln.today

CVE Published

Mar 31, 2026 - 02:00 nvd

MEDIUM 5.3

DescriptionNVD

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. Affected by this vulnerability is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument rxRate can lead to command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Command injection in Totolink A3300R 17.0.0cu.557_b20221024 allows authenticated remote attackers to execute arbitrary commands via manipulation of the rxRate parameter in the setWiFiBasicCfg function at /cgi-bin/cstecgi.cgi. The vulnerability has a CVSS score of 6.3 with publicly available exploit code, making it a moderate-priority issue for affected device administrators despite requiring prior authentication.

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-5177 vulnerability details – vuln.today

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