Apple iPhone 1.0/1.0.1/1.0.2 Tel Protocol input validation

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as problematic, has been found in Apple iPhone 1.0/1.0.1/1.0.2 (Smartphone Operating System). This issue affects some unknown functionality of the component Tel Protocol Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, and integrity. The summary by CVE is:

Mail in Apple iPhone 1.1.1 allows remote user-assisted attackers to force the iPhone user to make calls to arbitrary telephone numbers via a "tel:" link, which does not prompt the user before dialing the number.

The weakness was released 09/28/2007 by Michal Zalewski with McAfee (Website). The advisory is shared at The identification of this vulnerability is CVE-2007-3755 since 07/12/2007. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (36853) and SecurityTracker (ID 1018752). Entries connected to this vulnerability are available at 3342, 3339, 3340 and 3343.





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Privilege escalation
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍


07/12/2007 🔍
09/27/2007 +77 days 🔍
09/27/2007 +0 days 🔍
09/28/2007 +1 days 🔍
09/28/2007 +0 days 🔍
09/28/2007 +0 days 🔍
10/01/2007 +2 days 🔍
03/15/2021 +4914 days 🔍



Researcher: Michal Zalewski
Organization: McAfee
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-3755 (🔍)
X-Force: 36853 - Apple iPhone tel link phone hijacking, Medium Risk
SecurityTracker: 1018752 - Apple iPhone Bugs Let Remote Users Dial Phone Numbers, Execute Arbitrary Code, and Conduct Cross-Site Scripting Attacks
SecurityFocus: 25862 - Apple iPhone Mail Unauthorized tel: Initiation Vulnerability
Secunia: 26983 - Apple iPhone Multiple Vulnerabilities, Moderately Critical
OSVDB: 38536
Vupen: ADV-2007-3287

See also: 🔍


Created: 10/01/2007 03:25 PM
Updated: 03/15/2021 06:39 PM
Changes: (8) vulnerability_cvss2_nvd_basescore vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai exploit_price_0day
Complete: 🔍


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