Is CVE-2026-75783 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75783 being exploited in the wild.

How severe is CVE-2026-75783?

Critical severity, with a CVSS score of 9.6, published 18 August 2026.

Is there a fix for CVE-2026-75783?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-75783 attacked?

It is attacked over the network or from the adjacent network, in a network appliance.

Am I affected by CVE-2026-75783?

Check whether you run TRENDnet Tew-Wlc100p at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75783: TRENDnet TEW-WLC100P stack buffer overflow in DHCP handler

CVE-2026-75783 · Severity: critical · CVSS 9.6 · Published 2026-08-18

The TRENDnet TEW-WLC100P is a wireless access point controller used to manage enterprise network connectivity. A stack buffer overflow vulnerability in its DHCP processing component allows an attacker on the local network to crash the device or execute arbitrary code by sending a specially crafted DHCP response, potentially compromising the controller and all connected wireless devices.

Technologies: TRENDnet Tew-Wlc100p. Vendors: TRENDnet.

Quick answers

Is CVE-2026-75783 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75783 being exploited in the wild.
How severe is CVE-2026-75783?: Critical severity, with a CVSS score of 9.6, published 18 August 2026.
Which products and versions are affected?: TRENDnet Tew-Wlc100p 12.07b01.
Is there a fix for CVE-2026-75783?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-75783 attacked?: It is attacked over the network or from the adjacent network, in a network appliance.
Am I affected by CVE-2026-75783?: Check whether you run TRENDnet Tew-Wlc100p at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the netifd daemon's DHCP blobmsg handler (file /sbin/netifd) when processing DHCP Option 42 (NTP Server). The vulnerability is triggered when a malicious DHCP server on the same local network sends an oversized payload in this field, overflowing a fixed-size stack buffer. An attacker with network access on the LAN can craft a DHCP response that overwrites the return address register ($ra), redirecting execution to attacker-controlled memory. This enables remote code execution with the privileges of the netifd process. Exploitation requires the device to request or renew a DHCP lease and does not require authentication. A public proof-of-concept has been published demonstrating control of the instruction pointer.

Affected products

TRENDnet TEW-WLC100P 12.07b01

Timeline

2026-08-18: disclosed
exploited: Public proof-of-concept available

References

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