CVE-2024-36437Public exploit

Unauthorized phone calls via exported DialerActivity

Published Feb 3, 2025 · Updated Feb 5, 2025

Improper component export in TextNow 24.17.0.2 allows attackers to place phone calls through crafted intents without user interaction. The exported com.enflick.android.TextNow.activities.DialerActivity accepts android.intent.action.CALL intents from other installed applications without enforcing a calling permission or user confirmation. An attacker-controlled application must already be installed on the Android device; successful exploitation initiates an outbound call through TextNow.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper component export in TextNow 24.17.0.2 allows attackers to place phone calls through crafted intents without user interaction. The exported com.enflick.android.TextNow.activities.DialerActivity accepts android.intent.action.CALL intents from other installed applications without enforcing a calling permission or user confirmation. An attacker-controlled application must already be installed on the Android device; successful exploitation initiates an outbound call through TextNow.

The record

CVE
CVE-2024-36437
Published
Feb 3, 2025
Updated
Feb 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-926, T1616
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-926Improper Export of Android Application Components
T1616Call Control

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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