EUVD-2025-19183Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv2 – Jul 26, 2026
Remote OS command injection in TOTOLINK CA300-PoE firmware 6.2c.884 allows low-privileged authenticated attackers to execute arbitrary commands on the router's operating system via the FileName parameter of the setUpgradeUboot function in upgrade.so. Publicly available exploit code exists, and the EPSS score (2.45%, 85th percentile) indicates a moderate likelihood of exploitation in the wild, though no active exploitation has been confirmed.
Earlier versions of this analysis (1)
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
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
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
5DescriptionCVE.org
A vulnerability was found in TOTOLINK CA300-PoE 6.2c.884. It has been rated as critical. Affected by this issue is the function setUpgradeUboot of the file upgrade.so. The manipulation of the argument FileName leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Executive ViewAI
Organizations using A vulnerability should be aware of moderate risk from CVE-2025-6620, a command injection vulnerability rated CVSS 6.3. Exploitation could allow attackers to execute code or inject malicious input. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.
Apply vendor patch. If patching is delayed: deploy WAF rules, restrict network access, enable logging.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
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TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the admuser parameter in th
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TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a hard code password for root which is stored in the component /e
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the FileName parameter in t
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the minute parameter in the
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the plugin_version paramete
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the hour parameter in the s
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the NetDiagTracertHop param
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the NetDiagPingSize paramet
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the NetDiagPingTimeOut para
TOTOLINK CA300-PoE V6.2c.884 was discovered to contain a command injection vulnerability via the NetDiagPingNum paramete
Exploit-DB