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CVE-2024-45819

20
FAUCET Score

CVE-2024-45819 is a medium-severity vulnerability affecting Xen's PVH guests, where sensitive data could be inadvertently exposed. The flaw arises during ACPI table construction, as excess allocated memory retains prior contents instead of being properly cleared. This local attack (AV:L, AC:L) could lead to high confidentiality impact (C:H) for an authenticated attacker, but does not affect integrity or availability. There is currently no public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.8.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 79th percentile among its peer group of 15,940 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

openwall.com / lists/oss-security/2024/11/12/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2024/11/12/10
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2024/11/12/7
Mailing ListThird Party Advisory
xenbits.xen.org / xsa/advisory-464.html
PatchVendor Advisory
xenbits.xenproject.org / xsa/advisory-464.html
PatchVendor Advisory