CVE-2016-4480

highpriority · track · 34EPSS 0.005 · 45 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.54% (45th) EPSS

CVSS 7.2 · high

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

cvss

Technical severity, 0–10. One row per scoring source.

8.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.08.4highCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.5 · impact 5.9

v3.07.7highCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-264USprimary

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
oracle vm server= 3.2nvdUScpe:2.3:o:oracle:vm_server:*:*:*:*:*:*:*:*
oracle vm server= 3.3nvdUScpe:2.3:o:oracle:vm_server:*:*:*:*:*:*:*:*
oracle vm server= 3.4nvdUScpe:2.3:o:oracle:vm_server:*:*:*:*:*:*:*:*
xen xen≤ 4.6.1nvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-05-18modified 2026-06-17

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+8950 more

references (12)

External citations — patches, advisories, analysis.

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