Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.
CVE-2013-2076
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 38.9%
- KEV
- Not listed
Published
August 28, 2013
Last Modified
April 29, 2026
References (10)
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- secalert@redhathttp://secunia.com/advisories/55082
- secalert@redhathttp://security.gentoo.org/glsa/glsa-201309-24.xml
- secalert@redhathttp://www.debian.org/security/2014/dsa-3006
- secalert@redhathttp://www.openwall.com/lists/oss-security/2013/06/03/1
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/55082
- af854a3a-2127-422b-91ae-364da2661108http://security.gentoo.org/glsa/glsa-201309-24.xml
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2014/dsa-3006
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2013/06/03/1
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 38× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-06 02:19 UTCEPSS rescore
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- 2026-07-05 06:51 UTCOSV refresh
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- 2026-06-18 17:49 UTCEPSS rescore
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- 2026-06-16 17:44 UTCOSV refresh
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- 2026-05-29 13:41 UTCEPSS rescore
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- 2026-05-28 22:42 UTCEG score recompute
- 2026-05-28 22:41 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-22 11:01 UTCOSV refresh
- 2026-05-21 22:39 UTCEPSS rescore
- 2026-05-20 22:37 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
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Frequently asked(4)
What is CVE-2013-2076?
CVE-2013-2076 is a none vulnerability published on August 28, 2013. Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to…
When was CVE-2013-2076 disclosed?
CVE-2013-2076 was first published in the National Vulnerability Database on August 28, 2013, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2076 actively exploited?
CVE-2013-2076 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2013-2076?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2076, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2013-2076
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