High severity · published May 25, 2026
CVE-2026-9480
Edimax EW-7438RPn formrefresh stack-based overflow
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
A vulnerability was detected in Edimax EW-7438RPn 1.31. The impacted element is the function formrefresh of the file /goform/formrefresh. The manipulation of the argument submit-url results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EW
EW-7438RPn · Edimax
1.31 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9480
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9480
github.com
https://github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_18/18.md
vuldb.com
https://vuldb.com/submit/813902
vuldb.com
https://vuldb.com/vuln/365461
vuldb.com
https://vuldb.com/vuln/365461/cti
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