Security readout for executives and security teams
Plain-English summary
Edimax BR-6478AC firmware 1.23 has a buffer overflow in its USB account POST handler. A remote authenticated attacker could potentially compromise confidentiality, integrity, and availability of the device. Public exploit disclosure is reported, but CISA KEV evidence is absent.
Executive priority
Prioritize remediation for any deployed Edimax BR-6478AC firmware 1.23 device, especially internet-reachable routers. The risk is critical because successful exploitation could affect the router’s control plane and network trust boundary.
Technical view
The issue affects /goform/formUSBAccount in formUSBAccount. Manipulating UserName or Password can trigger a buffer overflow. The CVSS v2 score is 9.0 with network access, low complexity, and authentication required. Sources map it to CWE-119 and CWE-120.
Likely exposure
Exposure is likely where Edimax BR-6478AC or BR6478ACV2 devices run firmware 1.23, especially if administration is reachable from untrusted networks. The supplied evidence indicates authentication is required; unauthenticated exposure is not supported.
Exploitation context
VulDB reports remote exploitation is possible and that exploit details were publicly disclosed. The bundle does not show CISA KEV listing or confirmed in-the-wild exploitation. Treat public-facing or weakly controlled router administration as high urgency.
Researcher notes
Key uncertainty is exploit maturity and patch availability. The evidence supports public disclosure and remote authenticated exploitation, not active exploitation. Focus validation on firmware version, administrative reachability, authentication controls, and vendor update status.
Mitigation direction
- Identify Edimax BR-6478AC devices and firmware versions.
- Check Edimax or VulDB guidance for fixed firmware or vendor mitigation.
- Restrict administrative access to trusted management networks only.
- Disable remote administration where it is not required.
- Rotate router administrative credentials and remove shared accounts.
- Monitor for suspicious router configuration changes and authentication activity.
Validation and detection
- Inventory devices for BR-6478AC or BR6478ACV2 model identifiers.
- Confirm whether firmware version 1.23 is deployed.
- Verify management interfaces are not internet-exposed.
- Review access controls for the router administration surface.
- Check logs for unexpected successful logins or USB account changes.
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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-10163 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.
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: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.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- VDB-367416 | Edimax BR-6478AC POST Request formUSBAccount buffer overflowCVE reference, VulDB · vdb-entry, technical-description
- VDB-367416 | CTI Indicators (IOB, IOC, IOA)CVE reference, VulDB · signature, permissions-required
- Submit #818599 | Edimax BR6478ACV2 BR6478ACV2_v1.23 Buffer OverflowCVE reference, VulDB · third-party-advisory
- https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formUSBAccount-34b53a41781f803eb9b0dae1fea4dc3e?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.