Quick answers
- Is CVE-2026-49199 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-49199 being exploited in the wild.
- How severe is CVE-2026-49199?
- Informational severity, with a CVSS score of 10, published 29 May 2026.
- Which products and versions are affected?
- Acer Connect W6x Router W6x_GBL_2.00.000005 and earlier.
- Is there a fix for CVE-2026-49199?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-49199 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-49199?
- Check whether you run Acer Connect W6x 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
A command injection vulnerability (CWE-77) exists in the MQTT broker processing logic of the Acer Connect W6x router. The flaw is caused by a lack of application-level payload sanitization for incoming messaging strings. An unauthenticated attacker can exploit this by sending crafted MQTT messages to the device, leading to arbitrary code execution with root-level permissions. This vulnerability is addressed in firmware version W6x_GBL_2.00.000008 and later.
Affected products
- Acer Connect W6x Router W6x_GBL_2.00.000005 and earlier
Timeline
- 2026-05-29: disclosed
- 2026-05-29: advisory: Acer published security advisory 19672