Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9441 is a command injection flaw in Edimax BR-6478AC firmware 1.23. An authenticated remote attacker may be able to make the router run unintended system commands through a POST handler. Public proof-of-concept material is reported, but the provided sources do not show confirmed active exploitation or an available vendor fix.
Executive priority
Treat as a moderate operational priority. The flaw affects a network edge device and has public proof-of-concept material, but the provided evidence indicates authentication is required and does not confirm active exploitation.
Technical view
The flaw affects /goform/formiNICbasic in the POST request handler. Manipulation of the rootAPmac argument can result in command injection, mapped to CWE-74 and CWE-77. CVSS v2 is 6.5 with network access, low complexity, single authentication required, and partial confidentiality, integrity, and availability impact.
Likely exposure
Exposure appears limited to Edimax BR-6478AC firmware 1.23, with submission text referencing BR6478ACV2_v1.23. Risk is highest where the management interface is reachable by untrusted networks or broadly shared administrator accounts.
Exploitation context
The source bundle says an exploit has been publicly released and may be used for attacks. It does not include KEV status or other cited evidence of active exploitation. The CVSS vector indicates authentication is required.
Researcher notes
Evidence is sparse and vendor response is reportedly absent. Validate exact hardware revision carefully because the affected list names BR-6478AC 1.23 while the submission reference names BR6478ACV2_v1.23. Avoid assuming broader Edimax firmware exposure without confirmation.
Mitigation direction
- Inventory Edimax BR-6478AC or BR6478ACV2 devices and identify firmware 1.23.
- Check Edimax and VulDB guidance for a fixed firmware or official mitigation.
- Restrict router administration to trusted management networks or VPN access.
- Disable any unnecessary remote administration exposure where operationally possible.
- Plan replacement or isolation if no supported fixed firmware is available.
Validation and detection
- Confirm model and firmware version through asset records or the device administration interface.
- Verify management interfaces are not exposed to the public internet.
- Review administrative access paths for broad or shared authenticated access.
- Inspect device or gateway logs for requests to /goform/formiNICbasic.
- Look for unusual rootAPmac parameter activity without reproducing exploit behavior.
Public sources used
Based on public source material and reviewed before publication.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-74: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-9441 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
4 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR 8 6.4 VulDB CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R 2.8 3.4 VulDB CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R 2.8 3.4 VulDB 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 — — VulDB Vulnerability scoring details
Base CVSS 4.0 score
5.3 MediumVector: 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
Base CVSS 3.1 score
6.3 MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Base CVSS 3.0 score
6.3 MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Base CVSS 2.0 score
6.5 MediumVector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timeline VulDB
Advisory disclosed
- Source timeline VulDB
VulDB entry created
- CVE reserved CVE Program
The CVE ID was reserved by the assigning CNA.
- Source timeline VulDB
VulDB entry last update
- CVE published CVE Program
The CVE record was published.
- CVE updated CVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 source CVE List V5
- VDB-365422 | Edimax BR-6478AC POST Request formiNICbasic command injection CVE reference, VulDB · vdb-entry, technical-description
- VDB-365422 | CTI Indicators (IOB, IOC, TTP, IOA) CVE reference, VulDB · signature, permissions-required
- Submit #818450 | Edimax BR6478ACV2 BR6478ACV2_v1.23 Command Injection CVE reference, VulDB · third-party-advisory
- https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formiNICbasic-34b53a41781f808bbc45e8ca54f93dd1?source=copy_link CVE reference, VulDB · exploit
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.