Security readout for executives and security teams
Plain-English summary
A flaw in the Akuvox R50P VoIP phone ringtone upload feature can let a highly privileged network attacker upload a manipulated ringtone that causes code execution. Successful abuse could compromise confidentiality, integrity, and availability of the phone.
Executive priority
Treat this as a targeted infrastructure risk, not a broad internet worm risk based on current evidence. Prioritize exposed or poorly segmented VoIP management interfaces, especially where shared or weak administrative credentials may exist.
Technical view
CVE-2019-12326 is missing file and path validation in the ringtone upload function of Akuvox R50P firmware 50.0.6.156. The CVSS v3.0 vector is network-accessible, low complexity, high privileges required, no user interaction, with high impact across CIA.
Likely exposure
Exposure is most likely where Akuvox R50P phones running 50.0.6.156 allow administrative web access to the ringtone upload function from user, management, or internet-reachable networks. Structured affected-product metadata is incomplete.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability requires high privileges, but once authenticated, the upload validation flaw can lead to code execution on the device.
Researcher notes
Key gaps are incomplete structured affected metadata and no source-provided patch detail. The CVSS vector indicates high privileges are required, so validation should focus on administrative exposure, firmware version, and upload-path controls without attempting exploitation.
Mitigation direction
- Identify Akuvox R50P phones and confirm firmware versions.
- Check Akuvox or Fraunhofer guidance for patched firmware or vendor mitigations.
- Restrict administrative web access to trusted management networks only.
- Disable internet exposure of phone management interfaces.
- Review and reduce privileged accounts allowed to upload ringtones.
Validation and detection
- Inventory VoIP devices for Akuvox R50P firmware 50.0.6.156.
- Verify ringtone upload access requires trusted administrative authentication.
- Confirm management interfaces are not reachable from untrusted networks.
- Review device logs and configuration changes for unexpected ringtone uploads.
- Document vendor patch status or compensating controls for each device.
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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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 lookupCVE-2019-12326 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:H/S:U/UI:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:H/S:U/UI:N1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:H/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_Akuvox_R50P.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.