# CVE-2026-7257: Information disclosure in WRE6505 v2 firmware

> A local administrator can download and decrypt backup configuration files to expose sensitive information in Zyxel WRE6505 v2 devices.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 May 2026
- **Updated:** 12 May 2026
- **Also known as:** GHSA-ppfx-mp77-6vfg

## What is CVE-2026-7257?

CVE-2026-7257 is a medium-severity vulnerability in Zyxel WRE6505 v2 firmware, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

** UNSUPPORTED WHEN ASSIGNED ** An insecure storage of sensitive information vulnerability in the configuration file of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow a local attacker with administrator privileges to download and decrypt a backup configuration file.

Weakness: CWE-922 (Insecure Storage of Sensitive Information)

## Which versions are affected by CVE-2026-7257?

It affects 1 product.


Products: Zyxel Wre6505 Firmware.

## How do I fix CVE-2026-7257?

No fix has been published for CVE-2026-7257 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7257 being exploited?

There is no known exploitation of CVE-2026-7257 in the wild and no public exploit code.

## Other vulnerabilities in Zyxel WRE6505 v2 firmware

- [CVE-2017-7964](https://insights.sbomify.com/CVE-2017-7964/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2026-7256](https://insights.sbomify.com/CVE-2026-7256/): Command injection in WRE6505 v2 firmware (high 8.8)
- [CVE-2026-7255](https://insights.sbomify.com/CVE-2026-7255/): Auth bypass in WRE6505 v2 firmware (medium 6.5)
- [CVE-2026-6058](https://insights.sbomify.com/CVE-2026-6058/): Cross-site scripting in WRE6505 v2 firmware (medium 4.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7257 and fix it if it is affected.

What it is: CVE-2026-7257 is a medium-severity vulnerability in Zyxel WRE6505 v2 firmware, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-7257 in the wild and no public exploit code.

Affected product: Zyxel WRE6505 v2 firmware. 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-2026-7257/ (Markdown: https://insights.sbomify.com/CVE-2026-7257/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7257
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7257
- OSV: https://osv.dev/vulnerability/CVE-2026-7257

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7257/
Summaries are generated and may contain mistakes; the official description above is the record.