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CVE-2018-4871

27
FAUCET Score

CVE-2018-4871 is an Out-of-bounds Read vulnerability in Adobe Flash Player versions prior to 28.0.0.137, impacting products from Adobe, Apple, Google, Linux, Microsoft, and Red Hat. This flaw, caused by an invalid pointer offset, allows for sensitive data exposure. With a CVSS score of 7.5 (HIGH), it has a low attack complexity and does not require user interaction. While it has garnered significant media coverage and community discussion, there is no evidence of active exploitation, nor are public exploit codes available in Metasploit, Nuclei, or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
<= 28.0.0.126CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:*
<= 28.0.0.126CPE matchmatch criteria
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.51%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0551 is in the 86th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: flash-plugin-0:28.0.0.137-1.el6_9
View patch
adobevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-4871Important

flash-plugin: out-of-bounds read causing information leak (APSB18-01)

Jan 9, 2018

References

access.redhat.com / errata/RHSA-2018:0081
Third Party AdvisoryVDB Entry
helpx.adobe.com / security/products/flash-player/apsb18-01.html
Vendor Advisory
securityfocus.com / bid/102465
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040155
Third Party AdvisoryVDB Entry