CVE-2026-110111

HIGHPre-NVD 7.57.5
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-10-13. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-100463 (ENISA EUVD) · GHSA-9p53-2254-x397 (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists vatesfr xen-orchestra versions before 6.9.0 as affected, and vatesfr xen-orchestra versions 6.9.0 as unaffected. No release containing a fix is confirmed on record.

Xen Orchestra before 6.9.0 contains an improper access control vulnerability that allows any authenticated user to become global administrator by abusing the unprotected vm.importFromEsxi and vm.importMultipleFromEsxi methods. Attackers can point xo-server at a malicious ESXi host serving a crafted .vmx file with __proto__.permission set, polluting Object.prototype so permission-less accounts inherit admin rights and enabling remote code execution.

CVSS v3
7.5
EG Score
7.5HIGHhigh confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.6%
EPSS %ILE
49th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 13, 2026

Last Modified

October 26, 2026

Advisory Details (2)

Auto-updated Oct 17, 2026
No fix on record yet. Sources: github.
Web page

Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi | Advisories | VulnCheck

https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-privilege-escalation-via-prototype-pollution-in-vm-importfromesxi
GitHub advisoryMentions a patch (unverified)

Privilege Escalation to Global Administrator via Prototype Pollution through Attacker-Controlled VMware VMX in `vm.importFromEsxi` · Advisory · vatesfr/xen-orchestra · GitHub

https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv

Vendor Advisories for CVE-2026-110111(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  3. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  4. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  6. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  7. 2026-10-27 20:39 UTCEG score recompute
  8. 2026-10-27 20:39 UTCGHSA enrichmentGHSA-9p53-2254-x397 · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  10. 2026-10-26 19:39 UTCEG score recompute
  11. 2026-10-26 19:39 UTCGHSA enrichmentGHSA-9p53-2254-x397 · GitHub severity HIGH · GitHub CVSS 7.5
  12. 2026-10-26 18:41 UTCEG score recompute
  13. 2026-10-26 18:41 UTCGHSA enrichmentGHSA-9p53-2254-x397 · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  15. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  16. 2026-10-25 14:52 UTCEG score recompute
  17. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-10-20 19:10 UTCEG score recompute
  22. 2026-10-20 19:10 UTCGHSA enrichmentGHSA-9p53-2254-x397 · GitHub severity HIGH · GitHub CVSS 7.5
  23. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  25. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
Show 8 more
  1. 2026-10-18 05:06 UTCEG score recompute
  2. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-13 19:53 UTCEG score recompute
  7. 2026-10-13 19:19 UTCMITRE cvelistV5first tracked
  8. 2026-10-13 19:16 UTCEG score recomputeFirst assessed: 7.5 HIGH

Frequently asked(5)

What is CVE-2026-110111?
CVE-2026-110111 is a high-severity vulnerability; its CVE record was published on October 13, 2026. Xen Orchestra before 6.9.0 contains an improper access control vulnerability that allows any authenticated user to become global administrator by abusing the unprotected vm.importFromEsxi and vm.importMultipleFromEsxi methods. Attackers can point xo-server at a malicious ESXi host serving a crafted…
When was CVE-2026-110111 made public?
CVE-2026-110111 was made public on September 30, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 13, 2026. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-110111 actively exploited?
CVE-2026-110111 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-110111?
CVE-2026-110111 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-110111?
No fix for CVE-2026-110111 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists vatesfr xen-orchestra versions before 6.9.0 as affected, and vatesfr xen-orchestra versions 6.9.0 as unaffected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-110111 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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