# CVE-2016-4655: Apple iOS Information Disclosure Vulnerability

Source: https://junglewise.ai/threats/cve-2016-4655-apple-ios-information-disclosure-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2016-4655 · Severity: critical · CVSS 5.5 · Exploited in the wild · Published 2022-05-24

The kernel in Apple iOS before 9.3.5 allows local attackers to obtain sensitive information from memory via a crafted application. This vulnerability was part of the 'Trident' exploit chain used in the Pegasus spyware.

Technologies: [Apple iPadOS](https://junglewise.ai/threats/technologies/ipados), [Apple macOS](https://junglewise.ai/threats/technologies/macos), [Apple watchOS](https://junglewise.ai/threats/technologies/watchos), [Cisco IOS](https://junglewise.ai/threats/technologies/ios). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple), [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2016-4655 exploited in the wild?** Yes. CVE-2016-4655 is known to be exploited in the wild, first recorded on 24 May 2022. Treat it as urgent.

**How severe is CVE-2016-4655?** Critical severity, with a CVSS score of 5.5, published 24 May 2022.

**Which products and versions are affected?** Apple iOS before 9.3.5.

**Is there a fix for CVE-2016-4655?** A patch was published on 2016-08-25: Apple released iOS 9.3.5 to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2016-4655 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2016-4655?** Check whether you run Apple iPadOS, Apple macOS, Apple watchOS or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apple iOS before 9.3.5

## Timeline

- 2016-08-25: disclosed: Public disclosure of Trident/Pegasus exploits by Lookout
- 2016-08-25: patched: Apple released iOS 9.3.5 to address the vulnerability
- 2022-05-24: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-05-24: exploited: Reported as exploited in the wild in CISA KEV catalog

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