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Fencer Vulns
high 7.5

CVE-2018-4871 json

An Out-of-bounds Read issue was discovered in Adobe Flash Player before 28.0.0.137.

published 2018-01-09 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16656

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

An Out-of-bounds Read issue was discovered in Adobe Flash Player before 28.0.0.137. This vulnerability occurs because of computation that reads data that is past the end of the target buffer. The use of an invalid (out-of-range) pointer offset during access of internal data structure fields causes the vulnerability. A successful attack can lead to sensitive data exposure.

Patch / fix

  • flash-plugin RHEL 6 EXTRAS 28.0.0.137-1.el6_9

red hat advisories RHSA-2018:0081

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-4871 updated cvss 6.5

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

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) flash-plugin 28.0.0.137-1.el6_9 Red Hat Enterprise Linux Server Supplementary (v. 6) flash-plugin 28.0.0.137-1.el6_9 Red Hat Enterprise Linux Workstation Supplementary (v. 6) flash-plugin 28.0.0.137-1.el6_9
    fixed: vendor fix RHSA-2018:0081

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.51% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Adobe Flash Player before 28.0.0.137

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.