How severe is CVE-2024-45819?

CVE-2024-45819 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-45819 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45819?

CVE-2024-45819 affects Xen. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45819?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-45819 have an EU (EUVD) identifier?

Yes. CVE-2024-45819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41273.

When was CVE-2024-45819 published?

CVE-2024-45819 was published on 2024-12-19 and last updated on 2026-06-17.

CVE-2024-45819

CVE-2024-45819 is a medium-severity vulnerability in Xen with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41273
Weakness: CWE-276
Affected product: Xen
Published: 2024-12-19
Last modified: 2026-06-17

Description

PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.

Frequently asked questions

What is CVE-2024-45819?: PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.
How severe is CVE-2024-45819?: CVE-2024-45819 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-45819 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45819?: CVE-2024-45819 affects Xen. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45819?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-45819 have an EU (EUVD) identifier?: Yes. CVE-2024-45819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41273.
When was CVE-2024-45819 published?: CVE-2024-45819 was published on 2024-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*

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