CVE-2025-6619

CRITICAL

A vulnerability was found in TOTOLINK CA300-PoE 6.2c.884. It has been declared as critical. Affected by this vulnerability is the function setUpgradeFW of the file upgrade.so. The manipulation of t...

Affects 2 products across 1 vendor.

CVSS 3.19.8
CVSS v42.1
EPSS2.4%
Percentile84th
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.

CWE-78: OS Command Injection

Attacker injects OS commands through application inputs passed to system() or equivalent calls, leading to arbitrary command execution.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-77 CWE-78
CAPEC-76 Manipulating Web Input to File System Calls
via CWE-77
CAPEC-108 Command Line Execution through SQL Injection
via CWE-78
CAPEC-6 Argument Injection
via CWE-78
CAPEC-15 Command Delimiters
via CWE-77 CWE-78
Show all 11
via CWE-77
via CWE-77
via CWE-78
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

A critical vulnerability (CVE-2025-6619) in TOTOLINK CA300-PoE 6.2c.884 allows for OS command injection via manipulation of the FileName argument in the setUpgradeFW function of the upgrade.so file, enabling remote exploitation.

BSID: BS-2025-GLOBAL-031672-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2025-6619?
A critical vulnerability (CVE-2025-6619) in TOTOLINK CA300-PoE 6.2c.884 allows for OS command injection via manipulation of the FileName argument in the setUpgradeFW function of the upgrade.so file, enabling remote exploitation.
What is the CVSS score for CVE-2025-6619?
CVE-2025-6619 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: 2.4%.
Is CVE-2025-6619 actively exploited?
No confirmed active exploitation of CVE-2025-6619 as of 2026-09-25.
How do I remediate CVE-2025-6619?
Priority: IMMEDIATE.
What systems are affected by CVE-2025-6619?
CVE-2025-6619 affects Totolink Ca300-Poe.
Vulnerability Details
CVE IDCVE-2025-6619
BSIDBS-2025-GLOBAL-031672-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2025-06-25
Last Modified2026-06-17
ICS Relevance15%
Weakness (CWE)
Command InjectionOS Command Injection
SourceNVD
Official Description

A vulnerability was found in TOTOLINK CA300-PoE 6.2c.884. It has been declared as critical. Affected by this vulnerability is the function setUpgradeFW of the file upgrade.so. The manipulation of the argument FileName leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability is exploited by manipulating the FileName argument in the setUpgradeFW function, leading to OS command injection. This can be done remotely, and the exploit has been publicly disclosed.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Totolink Ca300-Poe (device & firmware) 6.2c.884
Remediation

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

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 477 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 Hash689d093fb1c7366edf1eabfa7149cc3d07a0f904dca96a1fb9187b31ba91744767066cd1f4f47244920e24c1a28ccb652791debd526d38fd2f997333514b9f92
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