CVE-2022-42320

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2022-11-01. NVD baseline CVSS 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.0Exploit: NoneExposed: 0

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

Xenstore: Guests can get access to Xenstore nodes of deleted domains Access rights of Xenstore nodes are per domid. When a domain is gone, there might be Xenstore nodes left with access rights containing the domid of the removed domain. This is normally no problem, as those access right entries will be corrected when such a node is written later. There is a small time window when a new domain is created, where the access rights of a past domain with the same domid as the new one will be regarded to be still valid, leading to the new domain being able to get access to a node which was meant to be accessible by the removed domain. For this to happen another domain needs to write the node before the newly created domain is being introduced to Xenstore by dom0.

CVSS v3
7.0
EG Score
7.0(medium)
EPSS
18.9%
KEV
Not listed

Published

November 1, 2022

Last Modified

November 21, 2024

References (16)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 42× 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.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
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  10. 2026-07-16 16:19 UTCOSV refresh
  11. 2026-07-15 16:56 UTCEPSS rescore
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  1. 2026-07-02 16:58 UTCEPSS rescore
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  5. 2026-06-29 14:04 UTCEPSS rescore
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  7. 2026-06-28 14:32 UTCOSV refresh
  8. 2026-06-28 14:06 UTCEPSS rescore
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  37. 2026-06-11 03:39 UTCOSV refresh
  38. 2026-06-10 22:17 UTCEPSS rescore
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  41. 2026-06-08 14:15 UTCEPSS rescore
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  68. 2026-05-26 07:17 UTCEPSS rescore
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  70. 2026-05-26 07:17 UTCEPSS rescore
  71. 2026-05-25 12:54 UTCEG score recompute
  72. 2026-05-25 12:54 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2022-42320?
CVE-2022-42320 is a high vulnerability published on November 1, 2022. Xenstore: Guests can get access to Xenstore nodes of deleted domains Access rights of Xenstore nodes are per domid. When a domain is gone, there might be Xenstore nodes left with access rights containing the domid of the removed domain. This is normally no problem, as those access right entries…
When was CVE-2022-42320 disclosed?
CVE-2022-42320 was first published in the National Vulnerability Database on November 1, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-42320 actively exploited?
CVE-2022-42320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-42320?
CVE-2022-42320 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2022-42320?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-42320, 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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