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Edimax BR-6208AC CVE-2026-108916

| EUVDEUVD-2026-97727 MEDIUM
Command Injection (CWE-77)
2026-10-12 VulDB GHSA-8mfm-548h-982c
5.5
CVSS 4.0 · Vendor: VulDB
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach router web interface
  2. Delivery
    Send crafted /goform/formAccept request
  3. Exploit
    Inject shell commands via submit-url
  4. Execution
    Execute arbitrary commands on device
  5. Impact
    Compromise router / pivot to LAN

Vulnerability 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.

Exploitation Conditions

Exploitation requires network access to the device's HTTP web-management interface and the ability to send a request to the /goform/formAccept endpoint with attacker-controlled input in the submit-url argument. Per the CVSS vector (PR:N/UI:N), no authentication or user interaction is needed. The principal limiting factor is exposure of the management interface: routers with their admin interface reachable only from the LAN are exploitable only by on-network or pivoted attackers, whereas WAN-exposed management dramatically widens reach. Because this is an end-of-life Edimax BR-6208AC (firmware 1.32) with no vendor patch, the only mitigations are network segmentation, disabling remote administration, or device replacement.

Impact

Moderate real-world priority. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) indicates a remotely reachable, low-complexity, unauthenticated command-injection flaw, which is the kind of signal that normally drives urgency. However, several factors temper this: the vendor-supplied 4.0 score of 6.9 (MEDIUM) reflects only LOW vulnerable-system impacts (VC:L/VI:L/VA:L), which is unusually conservative for a CWE-77 command-injection bug that typically yields full device compromise - this is a conflicting signal worth noting, as command injection on embedded routers usually warrants HIGH impact. The Exploit Maturity is E:P (Proof-of-Concept), and a public PoC exists on GitHub, but there is NO EPSS score, NO CISA KEV listing, and no SSVC decision data provided, so automatability and confirmed exploitation cannot be assessed from the input. Critically, this is an END-OF-LIFE product with no vendor response and no patch, meaning exposure is permanent for anyone still running it. The overall picture is a low-footprint, unpatchable device with a working PoC: dangerous where deployed but likely limited to targeted or opportunistic IoT-botnet scanning rather than broad enterprise impact. The only intelligence source is VulDB; no NVD or vendor corroboration is available.

Exploit ScenarioDerived

An attacker with network reach to the router's web management interface sends a crafted request to /goform/formAccept with a malicious payload in the submit-url argument, injecting shell commands that execute on the device. A public proof-of-concept is available on GitHub (fizz-is-on-the-way/Iot_vuls), lowering the barrier to exploitation. Because the attack is remote, unauthenticated (PR:N), and low-complexity, it could be automated by IoT botnets scanning for exposed management interfaces.

Monitor Track and reassess. Why: Vendor states no customer action required.
No patch listed yet 1.7% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 12, 2026

Unauthenticated remote command injection in the end-of-life Edimax BR-6208AC router (firmware 1.32) allows an attacker who can reach the device's HTTP web-management interface to execute arbitrary operating-system commands by manipulating the submit-url argument of the /goform/formAccept endpoint. The assessed CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H) confirms that no credentials and no user interaction are required, and publicly available exploit code exists in the GitHub repository referenced by the disclosure. Edimax was contacted before publication but did not respond and has shipped no patched firmware; the original CVSS 4.0 score of 6.9 understates the confidentiality, integrity and availability impact compared with the independent assessment, and overall exploitability is governed mainly by whether the management interface is reachable from the WAN or only from the local network, making this a moderate real-world priority.

RemediationAI

No vendor-released patch identified at time of analysis: Edimax was notified early but did not respond, the BR-6208AC is end-of-life and unsupported, and no fixed firmware version is available anywhere in the source data, so upgrading is not an option and replacement with a currently supported router is the only complete fix. Until the device can be retired, apply the following compensating controls with their trade-offs: block inbound WAN access to the router's web-management ports (typically TCP 80/443 or any custom admin port) at the upstream firewall or ISP router, accepting that remote administration becomes impossible; disable the device's remote-management/WAN-administration setting if present in the UI, understanding this is a hardening step and not proof of immunity against LAN-side exploitation; place the router on an isolated VLAN or guest network so that only trusted administrative hosts can reach /goform/formAccept, which limits lateral movement at the cost of extra switch/VLAN configuration; and restrict administrative access to a dedicated management subnet where the PoC path can never be reached from user or IoT segments. Detection should focus on POST requests to /goform/formAccept whose submit-url parameter contains shell metacharacters such as semicolons, backticks or pipes, since such traffic is anomalous for legitimate administration. Further details are available at https://vuldb.com/vuln/416728, https://vuldb.com/cve/CVE-2026-108916 and the proof-of-concept at https://github.com/fizz-is-on-the-way/Iot_vuls/tree/main/BR-6208AC/RCE_formAccept.

Affected VersionsENISA

BR-6208AC 1.32

Affected Packages

euvd br_6208ac no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause is CWE-77 (Improper Neutralization of Special Elements used in a Command), a classic OS command injection. The BR-6208AC runs an embedded Linux firmware image whose CGI-style web management interface exposes the /goform/ handler namespace; the formAccept handler takes an attacker-supplied submit-url parameter and passes it into a shell invocation without sanitization of shell metacharacters, so injected commands are executed with the privileges of the web server process (typically root or an equivalent privileged daemon on consumer router firmware). Because the vulnerable component is the HTTP management service rather than a feature behind authentication, the exposure surface is the web UI itself: any network path that lets a client POST to /goform/formAccept is sufficient. The CPE string cpe:2.3:a:edimax:br-6208ac:*:*:*:*:*:*:*:* with a wildcard version field and the absence of a fixed-version reference reflect that the vendor has discontinued the product line and no corrected firmware has been published, leaving no configuration-level fix inside the device.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulDB) PRIMARY 5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
vuln.today AI 9.8 CRITICAL

Remote, low-complexity, unauthenticated command injection on an embedded router typically runs with full (root) privilege, so AV:N/AC:L/PR:N/UI:N and C/I/A:H; contrasts with the vendor's conservative LOW impacts.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
Low
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
Low
Subsequent system: Integrity
Low
Subsequent system: Availability
Low

Lifecycle Timeline

2
CVSS changed
Oct 12, 2026 - 18:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
CVE Published
Oct 12, 2026 - 17:30 cve.org
MEDIUM 6.9

DescriptionCVE.org

A vulnerability was found in Edimax BR-6208AC 1.32. This vulnerability affects unknown code of the file /goform/formAccept. Performing a manipulation of the argument submit-url results in command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

Threat Intelligence Overview

EPSS Score
1.7%
Top 24% exploitable
Prevalence
Low
discontinued SOHO consumer Wi-Fi router, niche and end-of-life footprint
Exploit
POC
Public exploit code exists
Social Media
1
Sightings
Data Quality
7 sources
Confidence: High

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.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 1.7%
Patch available No
Active threat No
Deciding rule
Vendor states no customer action required
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +28
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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