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CVE Record

CVE-2019-12327: Hardcoded credentials in the Akuvox R50P VoIP phone 50.0.6.156 allow an attacker to get access to the devic...

Hardcoded credentials in the Akuvox R50P VoIP phone 50.0.6.156 allow an attacker to get access to the device via telnet. The telnet service is running on port 2323; it cannot be turned off and the credentials cannot be changed.

HighCVSS 7.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Akuvox R50P VoIP phones running firmware 50.0.6.156 include built-in telnet credentials. The telnet service listens on port 2323 and reportedly cannot be disabled or have its credentials changed. Any reachable affected phone should be treated as a serious exposure risk, especially on flat or internet-reachable networks.

Executive priority

Treat this as high priority where affected phones are reachable beyond a tightly controlled management network. The issue is operationally awkward because the source says telnet cannot be disabled and credentials cannot be changed, so containment or replacement may be required.

Technical view

CVE-2019-12327 describes hardcoded credentials in the Akuvox R50P 50.0.6.156 telnet service on TCP port 2323. The CVSS 3.0 score is 7.2 high, with network access, low complexity, no user interaction, and high confidentiality, integrity, and availability impact. The source bundle lists no CWE, CPE, or confirmed fix.

Likely exposure

Exposure is most likely where Akuvox R50P phones on firmware 50.0.6.156 are reachable from untrusted networks or shared internal networks. The provided data does not identify other affected models or versions.

Exploitation context

The bundle does not show CISA KEV status or any cited evidence of active exploitation. The risk comes from a reachable telnet service with credentials that reportedly cannot be changed, not from a complex exploit chain.

Researcher notes

The provided record is sparse: affected CPEs, CWE mapping, exploit-in-the-wild evidence, and patch status are absent. Analysis should stay limited to Akuvox R50P firmware 50.0.6.156 unless the Fraunhofer advisory or vendor materials confirm broader impact.

Mitigation direction

  • Inventory Akuvox R50P devices and confirm firmware versions.
  • Block untrusted access to TCP port 2323 at network boundaries.
  • Place affected phones on isolated voice or management VLANs.
  • Check Akuvox or Fraunhofer guidance for vendor-supported remediation.
  • Replace or retire devices if no supported fix exists.

Validation and detection

  • Identify Akuvox R50P phones in asset inventory and voice networks.
  • Confirm whether firmware version 50.0.6.156 is present.
  • Verify TCP port 2323 is not reachable from untrusted networks.
  • Review firewall and VLAN rules protecting VoIP device management paths.
  • Document any vendor advisory, firmware, or replacement decision.
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

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-2019-12327 mapping review

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Vulnerability profileCVE Program record
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

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.2CVSS 3.0HighCVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:H/S:U/UI:N1.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.2High
CVSS 3.0 vector shape for CVE-2019-12327Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:H/S:U/UI:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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