EUVD-2026-35023
GHSA-rhp9-667x-7qvw
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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
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3DescriptionCVE.org
A security flaw has been discovered in D-Link DIR-823G 1.0.2B05. The affected element is an unknown function of the file /etc/vsftpd.conf of the component vsftpd. Performing a manipulation results in least privilege violation. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
AnalysisAI
Least privilege violation in D-Link DIR-823G firmware version 1.0.2B05 exposes the vsftpd FTP daemon configuration file (/etc/vsftpd.conf) to manipulation by network-accessible, low-privileged authenticated users, enabling unauthorized modification of FTP service behavior. The CVSS vector (AV:N/AC:L/PR:L/UI:N/I:L) confirms this is remotely exploitable with low complexity by any authenticated user, resulting in limited integrity impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated session with low-level privileges on the D-Link DIR-823G (PR:L per CVSS vector) - unauthenticated remote exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The overall real-world risk is moderate-to-low despite the public POC. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained low-privileged authenticated access to the DIR-823G router - for example, via a guest FTP account or a compromised user credential - sends a crafted request or manipulates the /etc/vsftpd.conf configuration file to alter FTP service behavior beyond their authorized privilege level. A publicly available proof-of-concept has been released (referenced at the Notion link in the VulDB submission), lowering the skill bar for exploitation. … |
| Remediation | No vendor-released patch has been identified for this vulnerability at time of analysis - the remediation level in the CVSS vector is RL:X (undefined), and no D-Link advisory was found at https://www.dlink.com/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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