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UnratedPublic exploit

Buffer Overflow in Edimax EW-7478APC formUSBAccount

IdentifiersCVE-2026-13582CWE-120

CVE-2026-13582 is a remotely exploitable buffer overflow vulnerability affecting Edimax EW-7478APC version 1.04. The flaw is in the formUSBAccount function exposed through the /goform/formUSBAccount POST request handler. By supplying crafted values in the UserName and/or Password parameters, an attacker can trigger a memory corruption condition due to improper bounds handling, resulting in a buffer overflow. Public exploit code has been published. The available reporting does not provide deeper implementation details such as the exact buffer, stack/heap placement, or precise control-flow consequences.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a remote attacker to trigger memory corruption in the affected device via the vulnerable management endpoint. At minimum, this can cause service instability or denial of service. Depending on exploitability and runtime conditions, the overflow may also permit arbitrary code execution on the device. Public exploit availability materially increases the likelihood of real-world exploitation.

Mitigation

If you can’t patch tonight, do this now.

Until a vendor patch is available, limit access to the device management interface to trusted administrative networks only, using network segmentation, ACLs, firewall rules, or VPN-based administration. Disable remote administration if not strictly required. Monitor network traffic and device logs for suspicious POST requests targeting /goform/formUSBAccount, especially requests carrying unusually long UserName or Password values. If exposure cannot be adequately reduced, isolate the device or take it out of service.

Remediation

Patch, then assume compromise.

Upgrade to a fixed vendor version if and when Edimax releases one. If no security update is available, remove or replace affected EW-7478APC devices running version 1.04 where feasible. Restrict or eliminate exposure of the vulnerable /goform/formUSBAccount management endpoint from untrusted networks, and review device administration architecture to ensure the interface is not Internet-accessible.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
EdimaxEw-7478Apchardware

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

8 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-13582
NVD
nvd.nist.gov/vuln/detail/CVE-2026-13582
MITRE CWE · CWE-120
cwe.mitre.org