CVE-2015-8550

mediumpriority · track · 43EPSS 0.011 · 65 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

1.08% (65th) EPSS

CVSS 5.7 · medium

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.

cvss

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

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.7–8.2

v2.05.7mediumAV:L/AC:L/Au:S/C:P/I:P/A:Cprimary · NVD / NIST USexploitability 3.1 · impact 8.5

v3.08.2highCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.5 · impact 6

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

WhatsWrongAndWhy/CVE-2015-8550WhatsWrongAndWhy/CVE-2015-8550PoC · poc_in_github

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
novell suse linux enterprise real time extension= 12nvdUScpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:*:*:*:*:*:*:*:*
xen xenall versionsnvdUScpe: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 2016-04-14modified 2026-06-17

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+13856 more

references (25)

External citations — patches, advisories, analysis.

scry

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