Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9460 is a critical memory corruption issue in Edimax EW-7438RPn firmware 1.31. A flaw in the device web handling path can let an authenticated remote attacker crash or potentially take control of the device. A public proof of concept exists, but the supplied sources do not show confirmed active exploitation.
Executive priority
Treat this as urgent for any deployed EW-7438RPn 1.31 device, especially if management access is exposed. Prioritize isolation and vendor guidance because public exploit information exists and no source in the bundle names a fixed version.
Technical view
The vulnerability affects /goform/formAccept in Edimax EW-7438RPn 1.31. Manipulating the submit-url argument can trigger a stack-based buffer overflow, mapped to CWE-119 and CWE-121. The CVSS v2 vector is AV:N/AC:L/Au:S/C:C/I:C/A:C, indicating network reachability, low complexity, required authentication, and full impact.
Likely exposure
Exposure is limited to Edimax EW-7438RPn devices running version 1.31 where the web management interface is reachable by an authenticated user. Internet-exposed or broadly reachable management interfaces are the highest concern.
Exploitation context
VulDB reports that exploit material has been made public and could be used for attacks. The source bundle does not include KEV listing or other evidence of active exploitation. The vendor was reportedly contacted but did not respond, and no patch is named in the supplied sources.
Researcher notes
Evidence supports a remotely reachable, authenticated stack overflow in submit-url handling. Public exploit availability is reported, but active exploitation is not confirmed. Patch status is unclear because the vendor reportedly did not respond. Avoid assuming affected firmware beyond version 1.31 from the supplied data.
Mitigation direction
- Identify Edimax EW-7438RPn devices running firmware 1.31.
- Check Edimax or trusted advisory channels for firmware guidance.
- Restrict management access to trusted networks or VPN only.
- Remove any public Internet exposure to the management interface.
- Use strong unique admin credentials and limit authorized users.
- Plan isolation or replacement if no vendor fix is available.
Validation and detection
- Inventory devices and confirm exact firmware version.
- Verify whether /goform/formAccept is reachable from untrusted networks.
- Confirm management access requires authentication and is tightly scoped.
- Review logs for unexpected management access attempts.
- Track CVE, VulDB, and vendor pages for patch updates.
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-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-121: 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-2026-9460 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:UR 8 10 VulDB 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 2.8 5.9 VulDB 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 2.8 5.9 VulDB 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 — — VulDB Vulnerability scoring details
Base CVSS 4.0 score
8.7 HighVector: 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
8.8 HighVector: 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
8.8 HighVector: 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
9 CriticalVector: 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 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.
Source materials
- CVE List V5 source CVE List V5
- VDB-365441 | Edimax EW-7438RPn formAccept stack-based overflow CVE reference, VulDB · vdb-entry, technical-description
- VDB-365441 | CTI Indicators (IOB, IOC, IOA) CVE reference, VulDB · signature, permissions-required
- Submit #813897 | Edimax EW-7438RPn 1.31 Stack-based Buffer Overflow CVE reference, VulDB · third-party-advisory
- https://github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_13/13.md 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.
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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.