Security readout for executives and security teams
Plain-English summary
CVE-2018-16216 affects AudioCodes 405HD VoIP phones running firmware 2.2.12. A network-adjacent authenticated attacker could make the phone run operating system commands through its web interface. The source also notes authentication may be bypassed when chained with a separate unauthenticated password-change issue.
Executive priority
Treat as a priority for VoIP environments using this phone model. The business risk is device takeover on internal networks, especially where phones share networks with workstations or guests.
Technical view
The issue is command injection caused by missing input validation or escaping in the monitoring or memory status web interface. The CVE describes exploitation through a POST request to the device web server by an authenticated attacker on the same network, with possible authentication bypass via a separate chained weakness.
Likely exposure
Exposure is most likely where AudioCodes 405HD phones on firmware 2.2.12 have their web management interface reachable from user, guest, or compromised internal networks.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle. The source supports network-adjacent authenticated exploitation, with a noted chain that may remove the authentication requirement. No public active exploitation evidence is provided.
Researcher notes
Do not generalize beyond AudioCodes 405HD firmware 2.2.12 without additional vendor evidence. The bundle lacks CVSS, CWE, patch details, and confirmed exploit-in-the-wild reporting, so validation should focus on inventory and management-plane exposure.
Mitigation direction
- Identify AudioCodes 405HD phones and confirm firmware versions.
- Check AudioCodes or advisory guidance for fixed firmware or vendor mitigations.
- Restrict phone web management access to trusted administration networks only.
- Segment VoIP devices from user and guest networks.
- Disable unnecessary web management exposure where operationally feasible.
Validation and detection
- Inventory deployed AudioCodes 405HD devices and firmware versions.
- Confirm whether web management is reachable from non-admin network segments.
- Review access logs for unexpected POST requests to monitoring or memory status pages.
- Check for unauthorized configuration changes, enabled services, or password changes.
- Verify compensating controls block management access from untrusted internal networks.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-16216 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_AudioCodes_405HD.pdfCVE 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.