Quick answers
- Is CVE-2026-95104 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-95104 being exploited in the wild.
- How severe is CVE-2026-95104?
- High severity, with a CVSS score of 7.5, published 28 September 2026.
- Which products and versions are affected?
- Buffalo WEX-G300 prior to Ver.1.71; Buffalo WSR-300HP prior to Ver.2.55.
- Is there a fix for CVE-2026-95104?
- A patch was published on 2026-08-25: WSR-300HP firmware Ver.2.55 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-95104 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-95104?
- Check whether you run Buffalo WEX-G300 or Buffalo WSR-300HP 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 stack-based buffer overflow (CWE-121) exists in the web configuration interface of affected Buffalo Wi-Fi products. The vulnerability is triggered by a non-authenticated crafted HTTP request and can be exploited remotely via network access, causing a denial-of-service condition. Patches have been released with firmware versions 2.55 for WSR-300HP and 1.71 for WEX-G300.
Affected products
- Buffalo WSR-300HP prior to Ver.2.55
- Buffalo WEX-G300 prior to Ver.1.71
Timeline
- 2026-09-28: disclosed
- 2026-08-25: patched: WSR-300HP firmware Ver.2.55 released
- 2026-09-03: patched: WEX-G300 firmware Ver.1.71 released