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CVE-2014-8867

15
FAUCET Score

CVE-2014-8867 describes a denial-of-service vulnerability in Xen versions 4.4.x, 3.2.x, and earlier, affecting distributions like Debian, openSUSE, and Red Hat. The flaw stems from insufficient bounds checking during memory-mapped I/O (MMIO) emulation for the "REP MOVS" instruction, allowing local HVM guests to crash the host. With a CVSS score of 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C), it indicates a low-complexity attack requiring local access to achieve a complete availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
<= 3.2.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
3.2.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:*
3.2.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

AV:L/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 71st percentile among its peer group of 3,052 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-404.el5
View patch

Vendor Advisories (1)

redhatCVE-2014-8867Important

xen: Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor (xsa112)

Nov 27, 2014

References

kb.juniper.net / InfoCenter/index
lists.opensuse.org / opensuse-security-announce/2015-02/msg00005.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-02/msg00010.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-0783.html
Third Party Advisory
secunia.com / advisories/59949
Permissions RequiredThird Party Advisory
secunia.com / advisories/62672
Permissions RequiredThird Party Advisory
security.gentoo.org / glsa/201504-04
support.citrix.com / article/CTX200288
support.citrix.com / article/CTX201794
debian.org / security/2015/dsa-3140
Third Party Advisory
securityfocus.com / bid/71331
Third Party AdvisoryVDB Entry
xenbits.xenproject.org / xsa/advisory-112.html
PatchVendor Advisory