CVE-2014-8866

4.7 MEDIUM 0.4% exploit odds Fix listed

What it is

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on a 64-bit hypervisor, allows local 32-bit HVM guests to cause a denial of service (host crash) via vectors involving altering the high halves of registers while in 64-bit mode.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.4% 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: 0.4% in the next 30 days (EPSS).
Severity: 4.7 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: 0.4% · EPSS, next 30 days
Weakness: CWE-17
Record status: Modified

Affected

Debian Linux 7.0
Xen 3.3.0
Xen 3.3.1
Xen 3.3.2
Xen 3.4.0
Xen 3.4.1
Xen 3.4.2
Xen 3.4.3

Attack profile CVSS 2.0 · 4.7

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

Raw vector

AV:L/AC:M/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-2014-8866.md and follow it. Check whether this project is affected by CVE-2014-8866. 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