# CVE-2025-6763: Comet System H3531 Web-based Management setupA.cfg missing authentication

> Remote attackers can bypass authentication on the web management interface of Comet System devices to access configuration files.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Jun 2025
- **Updated:** 8 Oct 2025
- **Also known as:** GHSA-3gwm-7v5q-jm39

## What is CVE-2025-6763?

CVE-2025-6763 is a critical missing authorization vulnerability in Comet System H3531, published on 27 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in Comet System T0510, T3510, T3511, T4511, T6640, T7511, T7611, P8510, P8552 and H3531 1.60. Affected by this issue is some unknown functionality of the file /setupA.cfg of the component Web-based Management Interface. Performing manipulation results in missing authentication. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitation is known to be difficult. The exploit has been made public and could be used. There are still doubts about whether this vulnerability truly exists. The vendor explains, that "[d]evices described at CVE are not intended to be exposed into internet and proper security of devices is to end-users."

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2025-6763?

It affects 10 products.


Products: Cometsystem H3531 Firmware, Cometsystem P8510 Firmware, Cometsystem P8552 Firmware, Cometsystem T0510 Firmware, Cometsystem T3510 Firmware, Cometsystem T3511 Firmware, Cometsystem T4511 Firmware, Cometsystem T6640 Firmware, Cometsystem T7511 Firmware, Cometsystem T7611 Firmware.

## How do I fix CVE-2025-6763?

No fix has been published for CVE-2025-6763 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-6763 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6763 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6763 and fix it if it is affected.

What it is: CVE-2025-6763 is a critical missing authorization vulnerability in Comet System H3531, published on 27 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6763 exists.

Affected product: Comet System H3531. 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-2025-6763/ (Markdown: https://insights.sbomify.com/CVE-2025-6763/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6763
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6763
- OSV: https://osv.dev/vulnerability/CVE-2025-6763

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-6763/
Summaries are generated and may contain mistakes; the official description above is the record.