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CVE-2018-4920

31
FAUCET Score

CVE-2018-4920 is a critical type confusion vulnerability in Adobe Flash Player versions 28.0.0.161 and earlier, impacting products from Adobe, Apple, Google, Linux, and Microsoft. With a CVSS score of 8.8 (High), it can be exploited remotely with low complexity, potentially leading to arbitrary code execution with high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit, Nuclei, or ExploitDB, it has garnered significant community discussion and media coverage, indicating awareness despite no confirmed active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 28.0.0.161CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:*
<= 28.0.0.161CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:*
<= 28.0.0.161CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:*
<= 28.0.0.161CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.77%
Probability of exploitation in next 30 days
EPSS Percentile
94.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0777 is in the 94th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

adobepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: flash-plugin-0:29.0.0.113-1.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2018-4920Critical

flash-plugin: Type Confusion - remote code execution vulnerability (APSB18-05)

Mar 13, 2018

References

access.redhat.com / errata/RHSA-2018:0520
Third Party Advisory
helpx.adobe.com / security/products/flash-player/apsb18-05.html
PatchVendor Advisory
securityfocus.com / bid/103383
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1040509
Broken LinkThird Party AdvisoryVDB Entry