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CVE-2013-4361

11
FAUCET Score

CVE-2013-4361 describes an information disclosure vulnerability in Xen versions 3.3.x through 4.3.x. The flaw, stemming from incorrect variable usage in fbld instruction emulation, allows local HVM guests to access hypervisor stack information. With a low CVSS score of 2.1 (AV:L/AC:L/Au:N/C:P/I:N/A:N), this vulnerability is considered low severity, requiring local access and resulting only in information disclosure. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.3.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.3.0:*:*:*:*:*:*:*
3.3.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.3.1:*:*:*:*:*:*:*
3.3.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.3.2:*:*:*:*:*:*:*
3.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.4.0:*:*:*:*:*:*:*
3.4.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 54th percentile among its peer group of 2,096 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gogspatch availablevia llm_extracted

Vendor Advisories (2)

redhatCVE-2013-4361Low

Kernel: Xen: Xsa-66: information leak through fbld instruction emulation

Sep 30, 2013
gogsllm-gogs-9e1c65652ed6e124

Information leak through fbld instruction emulation

Sep 30, 2013

References

lists.opensuse.org / opensuse-security-announce/2014-03/msg00021.html
lists.opensuse.org / opensuse-updates/2013-11/msg00009.html
security.gentoo.org / glsa/glsa-201407-03.xml
debian.org / security/2014/dsa-3006
openwall.com / lists/oss-security/2013/09/30/3