CVE-2014-8867

4.9 MEDIUM 0.5% exploit odds Fix listed

What it is

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2014-12-01 15:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 4.9 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2014-12-01 15:59 UTC
Last modified: 2026-06-17 00:17 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-17
Record status: Modified

Affected

Redhat Enterprise Linux 5.0
Redhat Enterprise Linux Desktop 5.0
Xen ≤ 3.2.0
Xen 3.2.1
Xen 3.2.2
Xen 3.2.3
Xen 4.4.0
Xen 4.4.1

Attack profile CVSS 2.0 · 4.9

Attack vector: Local
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2014-8867.md and follow it. Check whether this project is affected by CVE-2014-8867. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record