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CVE-2012-5525

26
FAUCET Score

CVE-2012-5525 describes a denial-of-service vulnerability in Xen 4.2, specifically within the get_page_from_gfn hypercall function. A local PV guest OS administrator can exploit this by crafting a GFN, leading to a buffer over-read and system crash. The vulnerability has a CVSS score of 4.7, indicating a low attack complexity and local access vector, with a high impact on availability. While not actively exploited in the wild, a Metasploit module exists, and there is no significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.2.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.7MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0160 is in the 94th percentile among its peer group of 1,595 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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-2012-5525Important

kernel: xen: several hypercalls do not validate input GFNs

Dec 3, 2012
gogsllm-gogs-da01dd861e51a8be

several hypercalls do not validate input GFNs

Dec 3, 2012

References

secunia.com / advisories/51397
Vendor Advisory
secunia.com / advisories/55082
security.gentoo.org / glsa/glsa-201309-24.xml
exchange.xforce.ibmcloud.com / vulnerabilities/80480
openwall.com / lists/oss-security/2012/12/03/6
osvdb.org / 88133
securityfocus.com / bid/56805