Security readout for executives and security teams
Plain-English summary
This flaw lets an attacker abuse the Image Upload feature in NASCENT RemKon Device Manager 4.0.0.0 to run system commands as root. That means a compromised device manager could become fully controlled. The source bundle does not provide CVSS, CWE, patch, or active exploitation evidence.
Executive priority
Treat this as urgent for any deployed RemKon Device Manager 4.0.0.0 system. Root-level command execution in a management product can lead to full device compromise, but remediation planning should acknowledge the limited public patch information in the bundle.
Technical view
CVE-2021-38611 is a command-injection issue in assets/index.php, triggered through shell metacharacters in the image upload filename parameter. The CVE description states arbitrary command execution occurs as root. Affected metadata is sparse, but the description identifies NASCENT RemKon Device Manager 4.0.0.0.
Likely exposure
Exposure is most likely where RemKon Device Manager 4.0.0.0 is deployed and its Image Upload function is reachable by untrusted users or networks. Internet-facing or weakly segmented management interfaces would be highest concern.
Exploitation context
The supplied sources do not show CISA KEV listing or confirmed active exploitation. The public disclosure describes the vulnerable component and impact, but the bundle does not include exploit prevalence, authentication requirements, or a vendor fix.
Researcher notes
Key gaps are CVSS, CWE, authentication context, affected-version range, and fix status. Do not assume broader NASCENT products are affected. Validate exposure around assets/index.php and Image Upload, but avoid replaying weaponized filename patterns in production.
Mitigation direction
- Check NASCENT guidance or support for fixed versions before remediation decisions.
- Restrict RemKon Device Manager access to trusted administrative networks only.
- Disable or tightly control Image Upload if operationally possible.
- Review account permissions for users who can access upload functionality.
- Monitor for suspicious upload activity and unexpected root-level process behavior.
Validation and detection
- Inventory all RemKon Device Manager deployments and identify version 4.0.0.0.
- Confirm whether Image Upload is reachable from untrusted networks or users.
- Review web and application logs for unusual upload filenames or failures.
- Verify whether vendor guidance names a fixed build or compensating control.
- Document residual exposure if no vendor patch is available.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-38611 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.nascent.com/single-post/2019/01/17/nascent-technology-releases-remkon-31-to-enhance-audio-experienceCVE reference · x_refsource_MISC
- https://www.blacklanternsecurity.com/2021-08-23-Nascent-RemKon-CVEs/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.