CVE-2026-87827 KGUARD DVR unauthenticated remote command execution vulnerability
Unauthenticated attackers can execute arbitrary system commands on KGUARD DVR devices, leading to full compromise and botnet recruitment.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87827?
CVE-2026-87827 is a critical command injection vulnerability in KGUARD_firmware, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Certain KGUARD DVR devices running vulnerable firmware expose a system command execution service on all network interfaces without requiring authentication. A remote unauthenticated attacker with network access to the affected service can execute arbitrary system commands on the device, potentially resulting in complete compromise of the DVR.
The vulnerability is known to have been exploited in the wild by the Mirai_ptea (Rimasuta) and Mirai_aurora botnets for malware propagation and subsequent DDoS activity. The vulnerability was reported to affect firmware dating from 2016, while firmware released after 2017 appears to mitigate the issue by restricting the affected service to the localhost interface (127.0.0.1) instead of exposing it on all interfaces (0.0.0.0).
The affected-device list reported by Netlab includes many D1004NR, D1008NR, D1016NR, D1104, D1104NR, D1108NR, D1116NR, D1132NR, D2116NR, D97xx, D98xx, and D99xx variants and several associated hardware revisions
The exploit is included in some version of rapperbot and exploited in 2026. This assignment has been made to document the active exploitation and lack of documentation from the vendor.
Weakness: CWE-1188
Which versions are affected by CVE-2026-87827?
How do I fix CVE-2026-87827?
No fix has been published for CVE-2026-87827 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-2026-87827 being exploited?
There is no known exploitation of CVE-2026-87827 in the wild and no public exploit code.
Sources
Also known as GHSA-mxww-3qmj-g8p3.