# CVE-2026-11498: Tenda HG7/HG9/HG10 stack overflow in Web Management Interface

Source: https://junglewise.ai/threats/cve-2026-11498-tenda-hg7-hg9-hg10-stack-overflow-in-web-management-interface  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-08. Updated: 2026-06-08  
License: CC BY 4.0 with a link back

CVE-2026-11498 · Severity: high · CVSS 8.8 · Published 2026-06-08

A vulnerability exists in the web management interface of Tenda HG7, HG9, and HG10 routers, which are devices used to provide fiber-optic internet connectivity. An attacker with access to the management console can exploit this flaw to crash the device or potentially take full control of it. This could lead to a complete loss of internet service or unauthorized access to the local network.

Technologies: [Tenda HG10](https://junglewise.ai/threats/technologies/hg10), [Tenda HG7](https://junglewise.ai/threats/technologies/hg7), [Tenda HG9](https://junglewise.ai/threats/technologies/hg9). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2026-11498 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11498 being exploited in the wild.

**How severe is CVE-2026-11498?** High severity, with a CVSS score of 8.8, published 8 June 2026.

**Which products and versions are affected?** Tenda HG10 300001138_en_xpon; Tenda HG7 300001138_en_xpon; Tenda HG9 300001138_en_xpon.

**Is there a fix for CVE-2026-11498?** 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-2026-11498 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-11498?** Check whether you run Tenda HG10, Tenda HG7 or Tenda HG9 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 vulnerability exists in the Tenda HG7, HG9, and HG10 router firmware (version 300001138_en_xpon). The flaw is located within the 'asp_voip_OtherSet' function in the '/boaform/voip_other_set' component of the Web Management Interface. By sending a specially crafted request with a manipulated 'funckey_transfer' argument, a remote attacker with low-level authentication can overflow a buffer on the stack. This can result in a denial of service (system crash) or the execution of arbitrary code with the privileges of the web server.

## Affected products

- Tenda HG7 300001138_en_xpon
- Tenda HG9 300001138_en_xpon
- Tenda HG10 300001138_en_xpon

## Timeline

- 2026-06-08: disclosed: Vulnerability published via VulDB and NVD

## References

- [https://github.com/ssaaaa1234/tenda-hg10-voip-other-set-stack-overflow](https://github.com/ssaaaa1234/tenda-hg10-voip-other-set-stack-overflow)
- [https://vuldb.com/cve/CVE-2026-11498](https://vuldb.com/cve/CVE-2026-11498)
- [https://vuldb.com/submit/834887](https://vuldb.com/submit/834887)
- [https://vuldb.com/vuln/369118](https://vuldb.com/vuln/369118)
- [https://vuldb.com/vuln/369118/cti](https://vuldb.com/vuln/369118/cti)
- [https://www.tenda.com.cn/](https://www.tenda.com.cn/)

## Related threats

- [Tenda HG7/HG9/HG10 stack buffer overflow in formLoopBack](https://junglewise.ai/threats/cve-2026-104610-a-security-vulnerability-has-been-detected-in-tenda-hg7-hg9-and)
- [Tenda HG10 OS command injection in formgponConf](https://junglewise.ai/threats/cve-2026-86167-tenda-hg10-os-command-injection-in-formgponconf)
- [Tenda HG10 buffer overflow in formWanRedirect](https://junglewise.ai/threats/cve-2026-86166-tenda-hg10-buffer-overflow-in-formwanredirect)
- [Tenda HG10 buffer overflow in formURL](https://junglewise.ai/threats/cve-2026-86165-tenda-hg10-buffer-overflow-in-formurl)
- [Tenda HG10 buffer overflow in formWlanSetup SSID parameter](https://junglewise.ai/threats/cve-2026-85110-tenda-hg10-buffer-overflow-in-formwlansetup-ssid-parameter)