# CVE-2015-8553

## Summary

- **CVE ID:** CVE-2015-8553
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)
- **CWE:** N/A
- **Published:** Apr 13, 2016
- **Last Modified:** May 26, 2026

## Description

Xen allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory by not enabling memory and I/O decoding control bits.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-0777.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://xenbits.xen.org/xsa/advisory-120.html)
- [CNA](https://seclists.org/bugtraq/2019/Aug/18)
- [CNA](https://www.debian.org/security/2019/dsa-4497)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 50.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._