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Unrated severityNVD Advisory· Published Sep 19, 2013· Updated Apr 29, 2026

CVE-2013-5137

CVE-2013-5137

Description

A background app in iOS before 7 can use task-completion or VoIP APIs to push UI events to the foreground app, enabling UI redressing attacks.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

A background app in iOS before 7 can use task-completion or VoIP APIs to push UI events to the foreground app, enabling UI redressing attacks.

Vulnerability

IOKit in Apple iOS versions prior to 7 allows a malicious background application to inject user-interface events into the currently foreground application. This is achieved by exploiting the (1) task-completion API or (2) VoIP API, which normally grant background apps extended execution privileges. The affected versions include all iOS builds before the iOS 7 release.

Exploitation

An attacker must first have control over a background app installed on the device. Leveraging the task-completion or VoIP API, the attacker can programmatically send crafted user-interface events (such as touches or gestures) to the foreground app. No additional network access or physical interaction is required; the attack is purely local and executed from the background process.

Impact

Successful exploitation allows the attacker to manipulate the user interface of the foreground application, potentially tricking the user into performing unintended actions (a form of UI redressing). This could lead to disclosure of sensitive information or unauthorized transactions within the context of the foreground app's privileges.

Mitigation

Apple addressed this vulnerability in iOS 7, released on September 18, 2013 [1]. Users should update to iOS 7 or later. No workaround exists for unpatched versions, and the issue is not listed on CISA's Known Exploited Vulnerabilities (KEV) catalog.

References
  1. About the security content of iOS 7 - Apple Support

AI Insight generated on May 24, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.

Affected products

49
  • Apple Inc./Iphone OS48 versions
    cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*+ 47 more
    • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*range: <=6.1.4
    • cpe:2.3:o:apple:iphone_os:1.0.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.0.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.3:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.4:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:1.1.5:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.0.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.0.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.1.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:2.2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.1.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.1.3:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:3.2.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.0.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.2.5:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.2.8:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.3.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.3.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.3.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.3.3:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:4.3.5:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:5.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:5.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:5.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:5.1.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.0.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.1.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:iphone_os:6.1.3:*:*:*:*:*:*:*
  • Apple Inc./iOSllm-fuzzy
    Range: <7

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

4

News mentions

0

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