Quick answers
- Is CVE-2026-49197 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-49197 being exploited in the wild.
- How severe is CVE-2026-49197?
- 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-2026-49197?
- 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-2026-49197 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-49197?
- 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 critical authentication bypass vulnerability exists in the web endpoints of the Acer Connect W6x router intended for use with the Acer Connect mobile application. The root cause is improper validation of the HTTP Authorization header; specifically, the system fails to block or reject requests when the Base64 decoding of the credentials fails, leading to an 'open' state or bypassed check. A remote, unauthenticated attacker can exploit this by sending malformed headers to gain full administrative access to the device. This issue is tracked as CWE-287 and has been addressed in firmware version W6x_GBL_2.00.000008.
Affected products
- Acer Connect W6x Router W6x_GBL_2.00.000005 and earlier
Timeline
- 2026-05-29: advisory: Acer published the security advisory and firmware update.
- 2026-05-29: disclosed: CVE-2026-49197 was published to the NVD.