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CVE Record

CVE-2019-12325: The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the...

The Htek UC902 VoIP phone web management interface contains several buffer overflow vulnerabilities in the firmware version 2.0.4.4.46, which allow an attacker to crash the device (DoS) without authentication or execute code (authenticated as a user) to spawn a remote shell as a root user.

HighCVSS 8.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Htek UC902 VoIP phones running firmware 2.0.4.4.46 have web management buffer overflows. An attacker on an adjacent network can crash the device without logging in, and a logged-in user may execute code as root. This can disrupt phone service and potentially compromise the device.

Executive priority

Treat as a high-priority telecom infrastructure risk if Htek UC902 phones are in use. The main business concern is phone availability, with added risk of device compromise if attackers obtain management access.

Technical view

The CVE describes multiple buffer overflows in the Htek UC902 web management interface on firmware 2.0.4.4.46. CVSS 3.0 is 8.2, with adjacent-network attack vector, low complexity, low privileges for code execution, no user interaction, changed scope, and high availability impact.

Likely exposure

Exposure is most likely where Htek UC902 phones with firmware 2.0.4.4.46 are deployed and their web management interface is reachable from local or adjacent networks. The source bundle does not establish internet exposure or broader Htek model impact.

Exploitation context

The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. The described impact includes unauthenticated denial of service and authenticated root-level code execution, but the bundle does not provide exploit maturity details.

Researcher notes

Affected product metadata is incomplete in the CVE bundle, but the description specifically names Htek UC902 firmware 2.0.4.4.46. Avoid extrapolating to other models or versions without vendor evidence. No patch status is provided in the supplied sources.

Mitigation direction

  • Identify Htek UC902 phones and confirm firmware versions.
  • Restrict web management access to trusted administrative networks only.
  • Review Htek or Fraunhofer guidance for firmware updates or vendor remediation.
  • Use strong, unique management credentials to reduce authenticated attack paths.
  • Replace or isolate affected devices if no supported fix is available.

Validation and detection

  • Inventory VoIP endpoints for Htek UC902 model presence.
  • Confirm whether any device runs firmware 2.0.4.4.46.
  • Check whether web management is reachable from untrusted network segments.
  • Review device logs for crashes, resets, or unexpected management access.
  • Document compensating controls if vendor remediation is unavailable.
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.

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CVE-2019-12325 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.2 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:L/AV:A/A:H/C:L/I:L/PR:L/S:C/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
8.2CVSS 3.0HighCVSS:3.0/AC:L/AV:A/A:H/C:L/I:L/PR:L/S:C/UI:N2.35.3Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.2High
CVSS 3.0 vector shape for CVE-2019-12325Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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