What is CVE-2016-9636?

CVE-2016-9636 is a critical-severity vulnerability in Gstreamer, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-27.

How severe is CVE-2016-9636?

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

Buffer overflow in Gstreamer

CVE-2016-9636

Heap-based buffer overflow in the flx_decode_delta_fli function in gst/flx/gstflxdec.c in the FLIC decoder in GStreamer before 1.10.2 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by providing a 'write count' that goes beyond the initialized buffer.

Vulnerability class: Buffer Overflow

Published 2017-01-27 · 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: 0.083 (94.9th percentile), scored 2026-10-18.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.089 · newest: 0.083 · change: -0.006

Affected products

Gstreamer
Debian Linux — versions 8.0
Red Hat Enterprise Linux Desktop — versions 6.0
Red Hat Enterprise Linux Hpc Node — 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

References

www.debian.org/security/2016/dsa-3724 (vendor-advisory, Third Party Advisory)
rhn.redhat.com/errata/RHSA-2017-0019.html (vendor-advisory)
rhn.redhat.com/errata/RHSA-2016-2975.html (vendor-advisory, Third Party Advisory)
www.debian.org/security/2016/dsa-3723 (vendor-advisory, Third Party Advisory)
rhn.redhat.com/errata/RHSA-2017-0020.html (vendor-advisory)
www.securityfocus.com/bid/94499 (VDB Entry, Third Party Advisory, vdb-entry)
gstreamer.freedesktop.org/releases/1.10/ (Release Notes, Vendor Advisory)
www.openwall.com/lists/oss-security/2016/11/24/2 (mailing-list, Mailing List, Third Party Advisory)
bugzilla.gnome.org/show_bug.cgi (Issue Tracking)
security.gentoo.org/glsa/201705-10 (vendor-advisory)

Frequently asked questions

What is CVE-2016-9636?: CVE-2016-9636 is a critical-severity vulnerability in Gstreamer, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-27.
How severe is CVE-2016-9636?: Critical severity. CVSS v3 base score is 9.8 out of 10.