# CVE-2026-49201: Acer Wave 7 router: Hardcoded Cryptographic Key

> Attackers can decrypt and modify router backups using a hardcoded key to inject persistent backdoors, compromising device integrity.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 May 2026
- **Updated:** 29 May 2026
- **Also known as:** GHSA-5xrr-7q3m-rh98

## What is CVE-2026-49201?

CVE-2026-49201 is a critical vulnerability in Acer Wave 7 router, published on 29 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The upload.cgi binary, responsible for processing device backups, contains a hardcoded AES encryption key. This allows an attacker to decrypt, modify, and re-encrypt system backups, facilitating persistent backdoor injection.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2026-49201?

It affects 1 product.


Products: Acer Wave 7 Firmware.

## How do I fix CVE-2026-49201?

No fix has been published for CVE-2026-49201 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-49201 being exploited?

There is no known exploitation of CVE-2026-49201 in the wild and no public exploit code.

## Other vulnerabilities in Acer Wave 7 router

- [CVE-2026-49200](https://insights.sbomify.com/CVE-2026-49200/): Acer Wave 7 router: Broken Access Control (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49201 and fix it if it is affected.

What it is: CVE-2026-49201 is a critical vulnerability in Acer Wave 7 router, published on 29 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-49201 in the wild and no public exploit code.

Affected product: Acer Wave 7 router. 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-2026-49201/ (Markdown: https://insights.sbomify.com/CVE-2026-49201/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49201
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49201
- OSV: https://osv.dev/vulnerability/CVE-2026-49201

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49201/
Summaries are generated and may contain mistakes; the official description above is the record.