Vulnerability in Adobe Flash Player

CVE-2016-4171

Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote attackers to execute arbitrary code via unknown vectors, as exploited in the wild in June 2016.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.201 (97.4th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2016-4171: held from 0.201 to 0.201.

EPSS over last 30 days · oldest: 0.201 · newest: 0.201 · change: 0.000

Affected products

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: The impacted product is end-of-life and should be disconnected if still in use.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-4171?
CVE-2016-4171 is a critical-severity vulnerability in Adobe Flash Player. CVSS score: 9.8/10. Published 2016-06-16.
How severe is CVE-2016-4171?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-4171 known to be exploited?
Yes. CVE-2016-4171 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.