CVE-2026-2534 Comfast CF-N1 V2 mbox-config sub_44AC4C command injection
Remote attackers can execute arbitrary commands via the bandwidth parameter in the mbox-config CGI script of the Comfast CF-N1 V2 router.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2534?
CVE-2026-2534 is a medium-severity command injection vulnerability in Comfast CF-N1 V2, published on 16 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Comfast CF-N1 V2 2.6.0.2. The affected element is the function sub_44AC4C of the file /cgi-bin/mbox-config?method=SET§ion=ptest_bandwidth. The manipulation of the argument bandwidth leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-2534?
It affects 1 product.
Products include Comfast Cf-N1 Firmware.
How do I fix CVE-2026-2534?
No fix has been published for CVE-2026-2534 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-2534 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2534 exists.
Other vulnerabilities in Comfast CF-N1 V2
- CVE-2026-2535 Comfast CF-N1 V2 mbox-config sub_44AB9C command injection
- CVE-2025-9581 Comfast CF-N1 webmgnt multi_pppoe command injection
- CVE-2025-9582 Comfast CF-N1 webmgnt ntp_timezone command injection
- CVE-2025-9583 Comfast CF-N1 webmgnt ping_config command injection
- CVE-2025-9584 Comfast CF-N1 webmgnt update_interface_png command injection
Sources
Also known as GHSA-cr6h-978m-qj75.