# CVE-2026-14721: UTT HiPER 1250GW Web Endpoint ConfigWirelessBase_5g stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the UTT HiPER 1250GW web endpoint via the ssid argument, potentially leading to code execution.

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jul 2026
- **Updated:** 6 Jul 2026
- **Also known as:** GHSA-497j-pwp3-mjvj

## What is CVE-2026-14721?

CVE-2026-14721 is a high-severity memory corruption vulnerability in UTT HiPER 1250GW, published on 5 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been found in UTT HiPER 1250GW up to 3.2.7-210907-180535. This affects an unknown function of the file /goform/ConfigWirelessBase_5g of the component Web Endpoint. The manipulation of the argument ssid leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-14721?


## How do I fix CVE-2026-14721?

No fix has been published for CVE-2026-14721 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14721 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14721 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14721 and fix it if it is affected.

What it is: CVE-2026-14721 is a high-severity memory corruption vulnerability in UTT HiPER 1250GW, published on 5 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14721 exists.

Affected product: UTT HiPER 1250GW. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14721/ (Markdown: https://insights.sbomify.com/CVE-2026-14721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14721
- OSV: https://osv.dev/vulnerability/CVE-2026-14721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14721/
Summaries are generated and may contain mistakes; the official description above is the record.