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CVE Record

CVE-2018-19988: In the /HNAP1/SetClientInfoDemo message, the AudioMute and AudioEnable parameters are vulnerable, and the v...

In the /HNAP1/SetClientInfoDemo message, the AudioMute and AudioEnable parameters are vulnerable, and the vulnerabilities affect D-Link DIR-868L Rev.B 2.05B02 devices. In the SetClientInfoDemo.php source code, the AudioMute and AudioEnble parameters are saved in the ShellPath script file without any regex checking. After the script file is executed, the command injection occurs. It needs to bypass the wget command option with a single quote. A vulnerable /HNAP1/SetClientInfoDemo XML message could have single quotes and backquotes in the AudioMute or AudioEnable element, such as the '`telnetd`' string.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2018-19988 is a command-injection flaw reported in D-Link DIR-868L Rev.B firmware 2.05B02. A vulnerable HNAP configuration message can cause user-supplied values to be written into and executed by a shell script, potentially letting an attacker run commands on the router.

Executive priority

Treat as high priority where affected routers are exposed beyond trusted administration networks. The issue can lead to command execution on network edge equipment, but the supplied sources do not confirm active exploitation or a named vendor fix.

Technical view

The CVE description identifies /HNAP1/SetClientInfoDemo handling in SetClientInfoDemo.php. AudioMute and AudioEnable values are saved into a ShellPath script without regex validation; when that script runs, command injection occurs. The public record does not provide CVSS, CWE, patch, or vendor advisory details.

Likely exposure

Exposure appears limited to D-Link DIR-868L Rev.B devices running firmware 2.05B02 with the affected HNAP function reachable. Internet-facing or broadly reachable router management services would carry the highest operational risk.

Exploitation context

The CVE is not listed as CISA KEV in the supplied bundle. The references include public vulnerability details, but the provided sources do not show confirmed active exploitation, exploitation prevalence, or a vendor patch statement.

Researcher notes

Evidence is thin: CVSS, CWE, affected CPEs, patch status, and vendor advisory data are absent from the bundle. The key technical claim is unsanitized AudioMute/AudioEnable handling in SetClientInfoDemo.php leading to shell command injection after script execution.

Mitigation direction

  • Identify any D-Link DIR-868L Rev.B 2.05B02 devices in inventory.
  • Check D-Link guidance for fixed firmware or end-of-support status.
  • Restrict router management and HNAP access to trusted administrative networks.
  • Remove internet exposure for affected management interfaces.
  • Replace unsupported devices if no vendor-supported fix exists.

Validation and detection

  • Confirm model, hardware revision, and firmware version on each DIR-868L device.
  • Verify whether /HNAP1 management paths are reachable from untrusted networks.
  • Review device logs for unexpected SetClientInfoDemo or HNAP activity.
  • Confirm compensating controls block management access from the internet.
  • Document remediation status for each affected router.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2018-19988 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.