What is CVE-2015-8550?

CVE-2015-8550 is a high-severity vulnerability in Novell SUSE Linux Enterprise Real Time Extension, classified under Improper Access Control. CVSS score: 8.2/10. Published 2016-04-14.

How severe is CVE-2015-8550?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2015-8550 known to be exploited?

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

Vulnerability in Novell SUSE Linux Enterprise Real Time Extension

CVE-2015-8550

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.

Published 2016-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.0th percentile), scored 2026-10-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Novell SUSE Linux Enterprise Real Time Extension — versions 12
Xen

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

References

www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
www.debian.org/security/2016/dsa-3519 (vendor-advisory)
www.securityfocus.com/bid/79592 (VDB Entry, Third Party Advisory, vdb-entry)
xenbits.xen.org/xsa/advisory-155.html (Vendor Advisory)
lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html (vendor-advisory, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html (vendor-advisory)
www.securitytracker.com/id/1034479 (VDB Entry, Third Party Advisory, vdb-entry)
security.gentoo.org/glsa/201604-03 (vendor-advisory)
www.debian.org/security/2016/dsa-3471 (vendor-advisory)
www.debian.org/security/2016/dsa-3434 (vendor-advisory)

Frequently asked questions

What is CVE-2015-8550?: CVE-2015-8550 is a high-severity vulnerability in Novell SUSE Linux Enterprise Real Time Extension, classified under Improper Access Control. CVSS score: 8.2/10. Published 2016-04-14.
How severe is CVE-2015-8550?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2015-8550 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.