Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9462 is a critical flaw in Edimax EW-7438RPn firmware 1.31. A remote attacker with required access could trigger a stack-based buffer overflow in a WPS proxy form handler, potentially taking control of the device. Public exploit material exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Treat this as urgent for any deployed EW-7438RPn 1.31 device, particularly if remotely administered. Public exploit availability and complete impact justify rapid exposure reduction even though active exploitation is not confirmed in the provided evidence.
Technical view
The issue affects /goform/formWpsProxyEnable in Edimax EW-7438RPn 1.31. Manipulating the submit-url argument can cause a stack-based buffer overflow, mapped to CWE-119 and CWE-121. The CVSS v2 score is 9.0 with network attack vector, low complexity, single authentication, and complete confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to Edimax EW-7438RPn devices running firmware 1.31, especially where the management interface is reachable from untrusted networks. The CVSS vector indicates authentication is required, but the attack is remote once that access condition is met.
Exploitation context
VulDB states exploit material is public and may be used. The source bundle does not include KEV listing or other evidence of active exploitation in the wild. Vendor contact reportedly received no response, and no official patch or workaround is named in the provided sources.
Researcher notes
Evidence is mainly from VulDB and the CVE source bundle. Vendor response and remediation status are unclear. Do not assume other Edimax models or firmware versions are affected unless separately confirmed. The CVSS vector shows authenticated remote attack conditions despite the description saying remote launch.
Mitigation direction
- Identify and prioritize Edimax EW-7438RPn devices running firmware 1.31.
- Restrict management access to trusted administrative networks only.
- Disable unnecessary remote administration exposure where operationally possible.
- Check Edimax guidance regularly for firmware updates or official mitigations.
- Increase monitoring for suspicious access to the affected WPS proxy endpoint.
Validation and detection
- Confirm device model and firmware version from asset inventory or administration UI.
- Verify whether the management interface is reachable from the internet or untrusted networks.
- Review logs for unusual requests involving /goform/formWpsProxyEnable or submit-url.
- Compare network detections with VulDB CTI indicators where available.
- Document whether authentication controls are enforced for the affected interface.
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-2026-9462 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: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.
ADP provider summaries
Source materials
- CVE List V5 source CVE List V5
- VDB-365443 | Edimax EW-7438RPn formWpsProxyEnable stack-based overflow CVE reference, VulDB · vdb-entry, technical-description
- VDB-365443 | CTI Indicators (IOB, IOC, IOA) CVE reference, VulDB · signature, permissions-required
- Submit #813899 | 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_15/15.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.