What is CVE-2015-7176?

CVE-2015-7176 is a vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-09-24.

Is CVE-2015-7176 known to be exploited?

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

Buffer overflow in Mozilla Firefox

CVE-2015-7176

The AnimationThread function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 uses an incorrect argument to the sscanf function, which might allow remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via unknown vectors.

Vulnerability class: Buffer Overflow

Published 2015-09-24 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.043 (90.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

Mozilla Firefox — versions 38.0, 38.0.1, 38.0.5

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html (vendor-advisory)
www.ubuntu.com/usn/USN-2754-1 (vendor-advisory)
www.mozilla.org/security/announce/2015/mfsa2015-112.html (Vendor Advisory)
www.ubuntu.com/usn/USN-2743-4 (vendor-advisory)
www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
www.ubuntu.com/usn/USN-2743-3 (vendor-advisory)
rhn.redhat.com/errata/RHSA-2015-1834.html (vendor-advisory)

Frequently asked questions

What is CVE-2015-7176?: CVE-2015-7176 is a vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-09-24.
Is CVE-2015-7176 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.