What is CVE-2017-11282?

CVE-2017-11282 is a critical-severity vulnerability in Adobe Flash Player, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-12-01.

How severe is CVE-2017-11282?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-11282 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Adobe Flash Player

CVE-2017-11282

Adobe Flash Player has an exploitable memory corruption vulnerability in the MP4 atom parser. Successful exploitation could lead to arbitrary code execution. This affects 26.0.0.151 and earlier.

Vulnerability class: Buffer Overflow

Published 2017-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.348 (98.4th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.348 · newest: 0.348 · change: 0.000

Affected products

Adobe Flash Player
Apple macOS
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-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

packetstormsecurity.com/files/144332/Adobe-Flash-appleToRange-Out-Of-Bounds-Rea… (VDB Entry, Third Party Advisory)
bugs.chromium.org/p/project-zero/issues/detail (Third Party Advisory)
www.securityfocus.com/bid/100716 (VDB Entry, Third Party Advisory, vdb-entry)
www.youtube.com/watch (Exploit, Third Party Advisory)
security.gentoo.org/glsa/201709-16 (vendor-advisory, VDB Entry, Third Party Advisory)
www.exploit-db.com/exploits/42783/ (Exploit, VDB Entry, Third Party Advisory, exploit)
helpx.adobe.com/security/products/flash-player/apsb17-28.html (Vendor Advisory)
access.redhat.com/errata/RHSA-2017:2702 (vendor-advisory, Third Party Advisory)
www.securitytracker.com/id/1039314 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-11282?: CVE-2017-11282 is a critical-severity vulnerability in Adobe Flash Player, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-12-01.
How severe is CVE-2017-11282?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-11282 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.