Quick answers
- Is CVE-2026-94003 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-94003 being exploited in the wild.
- How severe is CVE-2026-94003?
- Critical severity, with a CVSS score of 10, published 20 September 2026.
- Which products and versions are affected?
- Comfast CF-N1-S 2.6.0.1.
- Is there a fix for CVE-2026-94003?
- 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-2026-94003 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-94003?
- Check whether you run Comfast CF-N1-S 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 get_css_path_from_uri function in /cgi-bin/mbox-config fails to validate input length when copying URI path data into a fixed-size stack buffer, allowing a remote attacker to overflow the buffer without credentials. The vulnerable endpoint does not enforce login session validation, and the function uses only a "?" character or string terminator as a stop condition, enabling stack memory corruption including local variables, saved registers, and return addresses.
Affected products
- Comfast CF-N1-S 2.6.0.1
Timeline
- 2026-08-24: disclosed
- 2026-09-20: advisory