EUVD-2026-77343
GHSA-8rmq-j59h-j83m
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
PR:H reflects mandatory admin authentication; S:C applies because router compromise directly impacts all downstream clients' traffic confidentiality and integrity.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
7DescriptionCVE.org
A flaw has been found in D-Link DWR-M921 1.1.52. Impacted is the function system of the file /boafrm/formDiskFormat. This manipulation of the argument partition causes os command injection. The attack may be initiated remotely. The exploit has been published and may be used.
AnalysisAI
OS command injection in D-Link DWR-M921 firmware 1.1.52 allows an authenticated remote attacker to execute arbitrary shell commands on the device by supplying a crafted partition argument to the /boafrm/formDiskFormat endpoint, which passes the value unsanitized to the system() call. Exploitation requires high-privilege (admin-level) credentials, but a publicly available proof-of-concept exploit hosted on GitHub lowers the barrier significantly. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated HTTP session with administrator-level privileges (PR:H) on the router's web management interface. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 8.5 accurately reflects the high-privilege prerequisite (PR:H), meaning an attacker must already hold administrator credentials - this is the primary limiting factor. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis; the D-Link advisory portal (https://www.dlink.com/) should be monitored for updates. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all DWR-M921 devices running firmware 1.1.52 in your environment; immediately reset all administrative credentials to strong, unique values and restrict admin access to named personnel only. …
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Authenticated OS command injection in D-Link DWR-M921 firmware 1.1.52 allows a remote attacker with administrative crede
OS command injection in D-Link DWR-M921 firmware 1.1.52 exposes the router to remote arbitrary command execution via the
OS command injection in D-Link DWR-M921 router firmware 1.1.52 permits authenticated remote attackers to execute arbitra
Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
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