CVE-2016-4655

Name: CVE-2016-4655
Creator: NVD / NIST
Published: 2016-08-25T21:59:00.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10Actively ExploitedEPSS 33.35%

Last modified Jun 17, 2026

CVE-2016-4655 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app.. CISA has confirmed active exploitation in the wild. EPSS estimates a 33.35% chance of exploitation in the next 30 days.

Description

The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS Probability

33.35%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 14, 2022.

Affected Software

Vendor	Product	Versions
Apple	Iphone Os	< 9.3.5
Apple	Iphone Os	10.0

References

http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlBroken Link, Mailing List, Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00005.htmlBroken Link, Mailing List, Vendor Advisory
http://www.securityfocus.com/bid/92651Broken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/92965Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036694Broken Link, Third Party Advisory, VDB Entry
https://blog.lookout.com/blog/2016/08/25/trident-pegasus/Broken Link
https://support.apple.com/HT207107Vendor Advisory
https://support.apple.com/HT207145Vendor Advisory
https://www.exploit-db.com/exploits/44836/Exploit, Third Party Advisory, VDB Entry
http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlBroken Link, Mailing List, Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00005.htmlBroken Link, Mailing List, Vendor Advisory
http://www.securityfocus.com/bid/92651Broken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/92965Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036694Broken Link, Third Party Advisory, VDB Entry
https://blog.lookout.com/blog/2016/08/25/trident-pegasus/Broken Link
https://support.apple.com/HT207107Vendor Advisory
https://support.apple.com/HT207145Vendor Advisory
https://www.exploit-db.com/exploits/44836/Exploit, Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4655US Government Resource

Timeline

Published: Aug 25, 2016
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-4655?

The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app.

How severe is CVE-2016-4655?

CVE-2016-4655 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 33.35% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2016-4655?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-4655?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST