What is CVE-2014-9862?

CVE-2014-9862 is a high-severity vulnerability in Apple Mac OS X, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2016-07-22.

How severe is CVE-2014-9862?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2014-9862 known to be exploited?

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

Integer overflow in Apple Mac OS X

CVE-2014-9862

Integer signedness error in bspatch.c in bspatch in bsdiff, as used in Apple OS X before 10.11.6 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow) via a crafted patch file.

Vulnerability class: Integer Overflow

Published 2016-07-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.068 (93.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.068 · newest: 0.068 · change: 0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

Public proof-of-concept exploits

References

www.securityfocus.com/bid/91824 (vdb-entry)
security.FreeBSD.org/advisories/FreeBSD-SA-16:25.bspatch.asc (vendor-advisory)
android.googlesource.com/platform/external/bsdiff/+/4d054795b673855e3a7556c6f2f… (Issue Tracking)
chromium.googlesource.com/chromiumos/third_party/bsdiff/+/d0307d1711bd74e51b783… (Issue Tracking)
lists.apple.com/archives/security-announce/2016/Jul/msg00000.html (vendor-advisory, Mailing List, Vendor Advisory)
www.securitytracker.com/id/1036438 (vdb-entry)
bugs.chromium.org/p/chromium/issues/detail (Issue Tracking)
support.apple.com/HT206903 (Vendor Advisory)
lists.opensuse.org/opensuse-updates/2016-08/msg00026.html (vendor-advisory)
lists.debian.org/debian-lts-announce/2019/11/msg00028.html (mailing-list)

Frequently asked questions

What is CVE-2014-9862?: CVE-2014-9862 is a high-severity vulnerability in Apple Mac OS X, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2016-07-22.
How severe is CVE-2014-9862?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2014-9862 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.