CVE-2017-8905

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-215.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

May 11, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated May 22, 2026
No patch confirmed yet.
generic

XSA-215 - Xen Security Advisories

https://xenbits.xen.org/xsa/advisory-215.html
generic

Xen: Multiple vulnerabilities (GLSA 201705-11) — Gentoo security

https://security.gentoo.org/glsa/201705-11
generic

Updates on XSA-213, XSA-214 and XSA-215

https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/
generic
http://www.securitytracker.com/id/1038388
generic
http://www.securityfocus.com/bid/98436

Affected Packages

(9 across 9 ecosystems)
Alpine:v3.3(1)
PackageVulnerable rangeFixed inDependents
xen—4.6.3-r7—
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
xen—4.6.3-r9—
Alpine:v3.5(1)
PackageVulnerable rangeFixed inDependents
xen—4.7.2-r1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
xen—4.8.0~rc3-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
xen—4.8.0~rc3-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
xen—4.8.0~rc3-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
xen—4.8.0~rc3-1—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
xen4.1.4-3 ... 4.1.6.lts1-7 (19 versions)4.1.6.lts1-8—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
xen4.4.1-9 ... 4.4.1-9+deb8u8 (9 versions)4.4.1-9+deb8u9—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 149 total refreshes for this CVE.

  1. 2026-08-25 13:44 UTCEPSS rescore
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  1. 2026-07-23 14:15 UTCEPSS rescore
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  74. 2026-06-06 03:52 UTCOSV refresh
  75. 2026-06-05 22:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-8905?
CVE-2017-8905 is a high vulnerability published on May 11, 2017. Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-215.
When was CVE-2017-8905 disclosed?
CVE-2017-8905 was first published in the National Vulnerability Database on May 11, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8905 actively exploited?
CVE-2017-8905 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 65.1% of all scored CVEs.
What is the CVSS score of CVE-2017-8905?
CVE-2017-8905 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2017-8905?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-8905, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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