What is CVE-2018-12826?

CVE-2018-12826 is a high-severity vulnerability in Adobe Flash Player, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2018-08-29.

How severe is CVE-2018-12826?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Adobe Flash Player

CVE-2018-12826

Adobe Flash Player 30.0.0.134 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.

Vulnerability class: Buffer Overflow

Published 2018-08-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.074 (94.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.074 · newest: 0.074 · change: 0.000

Affected products

Adobe Flash Player
Apple Mac OS X
Google Chrome OS
Linux Kernel
Microsoft Windows
Microsoft Windows 10
Microsoft Windows 8.1
Red Hat Enterprise Linux Desktop — versions 6.0
Red Hat Enterprise Linux Server — versions 6.0
Red Hat Enterprise Linux Workstation — versions 6.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

www.securityfocus.com/bid/105066 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2018:2435 (vendor-advisory, Third Party Advisory)
www.securitytracker.com/id/1041448 (VDB Entry, Third Party Advisory, vdb-entry)
helpx.adobe.com/security/products/flash-player/apsb18-25.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-12826?: CVE-2018-12826 is a high-severity vulnerability in Adobe Flash Player, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2018-08-29.
How severe is CVE-2018-12826?: High severity. CVSS v3 base score is 7.5 out of 10.