# CVE-2026-52197: UTT nv518G command injection in gohead/sub_44af70

Source: https://junglewise.ai/threats/cve-2026-52197-utt-nv518g-command-injection-in-gohead-sub-44af70  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-30. Updated: 2026-07-01  
License: CC BY 4.0 with a link back

CVE-2026-52197 · Severity: info · CVSS 9.8 · Published 2026-06-30

A vulnerability exists in UTT nv518G enterprise routers, which are used to manage business network traffic and connectivity. An attacker can remotely send specially crafted commands to the device to take complete control of the router. This could lead to the theft of sensitive data passing through the network, a total shutdown of internet services, or a foothold for further attacks within the corporate network.

Technologies: [UTT NV518G](https://junglewise.ai/threats/technologies/nv518g). Vendors: [UTT](https://junglewise.ai/threats/vendors/utt).

## Quick answers

**Is CVE-2026-52197 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-52197 being exploited in the wild.

**How severe is CVE-2026-52197?** Informational severity, with a CVSS score of 9.8, published 30 June 2026.

**Which products and versions are affected?** UTT NV518G nv518GV3v3.2.7-210919-161313.

**Is there a fix for CVE-2026-52197?** 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-2026-52197 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-52197?** Check whether you run UTT NV518G 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 command injection vulnerability exists in the UTT nv518G router (firmware version nv518GV3v3.2.7-210919-161313) within the 'gohead/sub_44af70' component. The issue stems from a lack of input sanitization on parameters such as 'staticGateway' passed to the 'doSystem()' function. By injecting shell metacharacters (e.g., ';', '|', or '$()') into a POST request, a remote, unauthenticated attacker can execute arbitrary system commands with root privileges. This allows for full device compromise, including data interception and persistent access. While the NVD entry initially categorized this as Denial of Service, the technical proof-of-concept confirms arbitrary command execution.

## Affected products

- UTT nv518G nv518GV3v3.2.7-210919-161313

## Timeline

- 2026-06-30: disclosed
- 2026-06-30: advisory

## References

- [https://github.com/akuma-QAQ/CVEreport/blob/main/518G/FUN_0044af70/README.md](https://github.com/akuma-QAQ/CVEreport/blob/main/518G/FUN_0044af70/README.md)
- [https://utt.com.cn/downloadcenter.php?filetypeid=3&model=518G&lang=zhcn](https://utt.com.cn/downloadcenter.php?filetypeid=3&model=518G&lang=zhcn)

## Related threats

- [UTT nv518G command injection in gohead/sub_445C5C](https://junglewise.ai/threats/cve-2026-52192-utt-nv518g-command-injection-in-gohead-sub-445c5c)
- [UTT nv518G Buffer Overflow in gohead/sub_444C8C](https://junglewise.ai/threats/cve-2026-52191-utt-nv518g-buffer-overflow-in-gohead-sub-444c8c)
- [UTT nv518G buffer overflow in gohead/sub_487330](https://junglewise.ai/threats/cve-2026-52189-utt-nv518g-buffer-overflow-in-gohead-sub-487330)
- [UTT nv518G buffer overflow in gohead component](https://junglewise.ai/threats/cve-2026-52188-utt-nv518g-buffer-overflow-in-gohead-component)
- [UTT nv518G buffer overflow in GoAhead sub_483ba0](https://junglewise.ai/threats/cve-2026-52187-utt-nv518g-buffer-overflow-in-goahead-sub-483ba0)