GCVE-1-2026-20026 (CVE-2026-87827)
Vulnerability from gna-1 – Published: 2026-09-09 10:27 – Updated: 2026-09-09 10:53Title
KGUARD DVR unauthenticated remote command execution vulnerability
Summary
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.
Severity
CWE
- CWE-1188 - Insecure Default Initialization of Resource
Assigner
GNA-1
This instance
References
1 reference
| URL | Tags |
|---|---|
| https://blog.netlab.360.com/mirai_ptea-botnet-is-… | technical-description |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| KGUARD | KGUARD_firmware |
Unknown:
0 , ≤ *
(semver)
|
guessed |
CIRCL
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5391d078-3b34-4be8-ba3f-f7f829fa073c
Exploited: Yes
Characteristics
Remote Code Execution:
Yes
Authentication Required:
No
Local Access Required:
Remote
Severity:
100.0
Timestamps
First Seen: 2026-09-09
Asserted: 2026-09-09
Last Seen: 2026-09-09
Scope
Notes: Older firmware
Created: 2026-09-09 10:39 UTC
| Updated: 2026-09-09 10:39 UTC
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"title": "KGUARD DVR unauthenticated remote command execution vulnerability",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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