# CVE-2026-49201: Acer Wave 7 Router hardcoded AES key in upload.cgi

Source: https://junglewise.ai/threats/cve-2026-49201-acer-wave-7-router-hardcoded-aes-key-in-upload-cgi  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-29. Updated: 2026-05-29  
License: CC BY 4.0 with a link back

CVE-2026-49201 · Severity: info · CVSS 10 · Published 2026-05-29

The Acer Wave 7 router contains a hardcoded encryption key within the software responsible for processing device backups. This allows an unauthorized person to decrypt, modify, and re-encrypt system backups. An attacker could use this to inject a permanent 'backdoor' into the device, allowing them to maintain long-term access and control over the network traffic and the device itself.

Vendors: [Acer](https://junglewise.ai/threats/vendors/acer).

## Quick answers

**Is CVE-2026-49201 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-49201 being exploited in the wild.

**How severe is CVE-2026-49201?** Informational severity, with a CVSS score of 10, published 29 May 2026.

**Which products and versions are affected?** Acer Wave 7 Router T7c_GBL_1.01.000055 and earlier.

**Is there a fix for CVE-2026-49201?** A patch was published on 2026-06-30: Target fix date for firmware update. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-49201 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-49201?** Check whether you run Acer Wave 7 Router at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability stems from the use of a hardcoded AES cryptographic key within the 'upload.cgi' binary, which is used for processing device backups. An unauthenticated attacker with network access to the router's web interface can leverage this known key to decrypt legitimate backup files, insert malicious code or configuration changes (such as backdoors), and re-encrypt the file for restoration. This results in a complete compromise of device integrity and persistence. The issue is identified as CWE-798 (Use of Hard-coded Credentials) and is scheduled to be patched in a firmware update by the end of June 2026.

## Affected products

- Acer Wave 7 Router T7c_GBL_1.01.000055 and earlier

## Timeline

- 2026-05-29: disclosed
- 2026-05-29: advisory
- 2026-06-30: patched: Target fix date for firmware update.

## References

- [https://community.acer.com/en/kb/articles/19673](https://community.acer.com/en/kb/articles/19673)

## Related threats

- [Acer Wave 7 Router information disclosure in acer_cgi.log](https://junglewise.ai/threats/cve-2026-49200-acer-wave-7-router-information-disclosure-in-acer-cgi-log)