Is CVE-2013-4368 in the CISA KEV catalog?

No. CVE-2013-4368 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-4368?

CVE-2013-4368 has a CVSS v2 base score of 1.9 (LOW).

What is the EPSS score for CVE-2013-4368?

CVE-2013-4368 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-4368?

Upgrade xen on debian 11 to 4.4.0-1 or later.

CVE & CISA-KEV Catalog

CVE-2013-4368

LOW

1.9

CVSS v2

NVD

Description

The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

CWE-200Information Exposure

How to fix

Remediation Available

xenDebian

Fixed in:4.4.0-1CVE-2013-4368

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Other references9

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.