Security readout for executives and security teams
Plain-English summary
This CVE affects Edimax BR-6478AC firmware 1.23. A remote authenticated attacker may trigger a buffer overflow in the router’s QoS request handling. The public record says exploit material is available, but the bundle does not show confirmed active exploitation or a vendor patch.
Executive priority
Treat this as urgent for affected routers. Prioritize asset discovery, management-plane isolation, and vendor remediation checks. Business risk is highest where these routers protect sensitive networks or expose administration beyond trusted administrators.
Technical view
The flaw is in the /goform/formQoS POST handler, function formQoS, where manipulation of selSSID can cause a buffer overflow. CVSS v2 is 9.0 with network access, low complexity, single authentication, and complete confidentiality, integrity, and availability impact. CWE-119 and CWE-120 are listed.
Likely exposure
Exposure is limited to organizations running Edimax BR-6478AC firmware 1.23, especially where router administration is reachable from untrusted networks. The CVSS vector indicates authentication is required. The source bundle does not confirm internet-wide exposure levels.
Exploitation context
The CVE description says exploit material has been released publicly and may be used for attacks. KEV status is false, and the provided sources do not prove active exploitation in the wild.
Researcher notes
Evidence supports a remote authenticated buffer overflow in selSSID handling for Edimax BR-6478AC 1.23. No vendor patch, workaround, active exploitation confirmation, or broader model impact is provided in the bundle. Avoid assuming unauthenticated exploitation despite the remote attack description.
Mitigation direction
- Inventory Edimax BR-6478AC devices and identify firmware version 1.23.
- Check Edimax or trusted vendor guidance for fixed firmware or official mitigation.
- Restrict router management access to trusted networks or VPN-only paths.
- Disable remote administration where operationally possible.
- Monitor for suspicious QoS configuration requests and unexpected router changes.
Validation and detection
- Confirm whether any BR-6478AC devices run firmware 1.23.
- Verify management interfaces are not exposed to untrusted networks.
- Review logs for unusual requests involving /goform/formQoS.
- Check whether authenticated administrative access is tightly controlled.
- Do not test public exploit material against production routers.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-119: 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-120: 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 lookupCVE-2026-10126 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
- Critical
- CVSS
- 9 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/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.
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:C/I:C/A:C/E:POC/RL:ND/RC:UR810VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R2.85.9VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R2.85.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P——VulDBVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 2.0 score
9CriticalVector: AV:N/AC:L/Au:S/C:C/I:C/A:C/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 timelineVulDB
Advisory disclosed
- Source timelineVulDB
VulDB entry created
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineVulDB
VulDB entry last update
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- VDB-367303 | Edimax BR-6478AC POST Request formQoS buffer overflowCVE reference, VulDB · vdb-entry, technical-description
- VDB-367303 | CTI Indicators (IOB, IOC, IOA)CVE reference, VulDB · signature, permissions-required
- Submit #818454 | Edimax BR6478ACV2 BR6478ACV2_v1.23 Buffer OverflowCVE reference, VulDB · third-party-advisory
- https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formQoS-34b53a41781f804e9ddfe771c426d9b2?source=copy_linkCVE 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.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.