CVE-2016-9932
UnknownEPSS 0.42%
Last modified
CVE-2016-9932 is a vulnerability of currently unknown severity. CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | 3.3.0 |
| Xen | Xen | 3.3.1 |
| Xen | Xen | 3.3.2 |
| Xen | Xen | 3.4.0 |
| Xen | Xen | 3.4.1 |
| Xen | Xen | 3.4.2 |
| Xen | Xen | 3.4.3 |
| Xen | Xen | 3.4.4 |
| Xen | Xen | 4.0.0 |
| Xen | Xen | 4.0.1 |
| Xen | Xen | 4.0.2 |
| Xen | Xen | 4.0.3 |
| Xen | Xen | 4.0.4 |
| Xen | Xen | 4.1.0 |
| Xen | Xen | 4.1.1 |
| Xen | Xen | 4.1.2 |
| Xen | Xen | 4.1.3 |
| Xen | Xen | 4.1.4 |
| Xen | Xen | 4.1.5 |
| Xen | Xen | 4.1.6 |
| Xen | Xen | 4.1.6.1 |
| Xen | Xen | 4.2.0 |
| Xen | Xen | 4.2.1 |
| Xen | Xen | 4.2.2 |
| Xen | Xen | 4.2.3 |
| Xen | Xen | 4.2.4 |
| Xen | Xen | 4.2.5 |
| Xen | Xen | 4.3.0 |
| Xen | Xen | 4.3.1 |
| Xen | Xen | 4.3.2 |
| Xen | Xen | 4.3.3 |
| Xen | Xen | 4.3.4 |
| Xen | Xen | 4.4.0 |
| Xen | Xen | 4.4.1 |
| Xen | Xen | 4.4.2 |
| Xen | Xen | 4.4.3 |
| Xen | Xen | 4.4.4 |
| Xen | Xen | 4.5.0 |
| Xen | Xen | 4.5.1 |
| Xen | Xen | 4.5.2 |
| Xen | Xen | 4.5.3 |
| Xen | Xen | 4.5.5 |
| Xen | Xen | 4.6.0 |
| Xen | Xen | 4.6.3 |
| Xen | Xen | 4.7.0 |
References
- http://www.securityfocus.com/bid/94863Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037468Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-200.htmlPatch, Vendor Advisory
- https://support.citrix.com/article/CTX219378Vendor Advisory
- http://www.securityfocus.com/bid/94863Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037468Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-200.htmlPatch, Vendor Advisory
- https://support.citrix.com/article/CTX219378Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-9932?
CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.
How severe is CVE-2016-9932?
Severity scoring for CVE-2016-9932 is pending analysis. The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.
How do I fix CVE-2016-9932?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-9932?
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