CVE-2016-4655

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-05-24. Federal remediation due 2022-06-14.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

33.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 98.3% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2016-08-25 21:00Z10 YR AGO

Last updated

2025-10-21 23:55Z1 YR AGO

Reserved

2016-05-11

Assigning CNA

apple

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.1

Document digest

cd47d3bfd7af8630a3c075b820dbed47a45b2f6a90ee489c7ad89c5c6240b76f

• lists.apple.comAPPLE-SA-2016-09-14-1http://lists.apple.com/archives/security-announce/2016/Sep/msg00005.htmlvendor-advisoryx_refsource_APPLE
• blog.lookout.comhttps://blog.lookout.com/blog/2016/08/25/trident-pegasus/x_refsource_MISC
• www.exploit-db.com44836https://www.exploit-db.com/exploits/44836/exploitx_refsource_EXPLOIT-DB
• www.securityfocus.com92651http://www.securityfocus.com/bid/92651vdb-entryx_refsource_BID
• support.apple.comhttps://support.apple.com/HT207107x_refsource_CONFIRM
• lists.apple.comAPPLE-SA-2016-08-25-1http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlvendor-advisoryx_refsource_APPLE
• www.securitytracker.com1036694http://www.securitytracker.com/id/1036694vdb-entryx_refsource_SECTRACK
• www.securityfocus.com92965http://www.securityfocus.com/bid/92965vdb-entryx_refsource_BID
• support.apple.comhttps://support.apple.com/HT207145x_refsource_CONFIRM
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4655government-resource