Is CVE-2026-16248 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-16248 being exploited in the wild.

How severe is CVE-2026-16248?

High severity, with a CVSS score of 8.8, published 20 July 2026.

Which products and versions are affected?

Tenda AC10 16.03.10.09_multi_TDE01.

Is there a fix for CVE-2026-16248?

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-2026-16248 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-16248?

Check whether you run Tenda AC10 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-2026-16248: Tenda AC10 stack buffer overflow in fromAdvSetLanip

CVE-2026-16248 · Severity: high · CVSS 8.8 · Published 2026-07-20

A vulnerability exists in the Tenda AC10 router's web management interface. An authenticated attacker can send specially crafted network configuration data that exceeds the device's memory limits. This can lead to a complete system crash or allow the attacker to gain unauthorized control over the router, potentially compromising the security of the entire local network.

Technologies: Tenda AC10. Vendors: Tenda.

Quick answers

Is CVE-2026-16248 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-16248 being exploited in the wild.
How severe is CVE-2026-16248?: High severity, with a CVSS score of 8.8, published 20 July 2026.
Which products and versions are affected?: Tenda AC10 16.03.10.09_multi_TDE01.
Is there a fix for CVE-2026-16248?: 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-2026-16248 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-16248?: Check whether you run Tenda AC10 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 Tenda AC10 (firmware 16.03.10.09_multi_TDE01) within the 'fromAdvSetLanip' handler of the httpd/netctrl component. The vulnerability is caused by a lack of length validation when storing configuration values (such as LAN IP or DNS fields) via SetValue, which accepts up to 1499 bytes. When these values are subsequently retrieved via GetValue, the backend routine 'cfms_mib_proc_handle' uses the source string length as the bound for a strncpy operation into fixed-size stack buffers (e.g., 8 or 16 bytes). An authenticated attacker can exploit this by persisting an oversized configuration value, which triggers memory corruption and a process crash when the value is read back. The exploit has been made public.

Affected products

Tenda AC10 V4.0 16.03.10.09_multi_TDE01

Timeline

2026-07-20: disclosed: CVE published to NVD

References

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