CVE-2022-2764

MEDIUMNVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

Score 4.9 from GitHub Security Advisory published 2022-09-02. NVD baseline CVSS 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 4.9Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Undertow. Denial of service can be achieved as Undertow server waits for the LAST_CHUNK forever for EJB invocations.

CVSS v3
4.9
EG Score
4.9(medium)
EPSS
52.5%
KEV
Not listed

Published

September 1, 2022

Last Modified

November 21, 2024

References (4)

Vendor Advisories for CVE-2022-2764(5)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrh-sso7-keycloak-0:18.0.6-1.redhat_00001.1.el9sso2023-03-01redhat
redhatrh-sso7-keycloak-0:18.0.6-1.redhat_00001.1.el7sso2023-03-01redhat
redhatrh-sso-7/sso76-openshift-rhel8:7.6-202023-03-01redhat
redhatundertow2023-03-01redhat
redhatrh-sso7-keycloak-0:18.0.6-1.redhat_00001.1.el8sso2023-03-01redhat
redhateap7-undertow-0:2.2.20-1.SP1_redhat_00001.1.el9eap2022-12-05redhat
redhatio.undertow/undertow-core:2.2.20.SP1-redhat-000012022-12-05redhat
redhateap7-undertow-0:2.2.20-1.SP1_redhat_00001.1.el7eap2022-12-05redhat
redhateap7-undertow-0:2.2.20-1.SP1_redhat_00001.1.el8eap2022-12-05redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 48× 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 110 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
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  11. 2026-07-16 21:04 UTCOSV refresh
  12. 2026-07-16 17:00 UTCEPSS rescore
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  24. 2026-07-09 19:07 UTCEPSS rescore
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  1. 2026-07-07 13:44 UTCEPSS rescore
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  6. 2026-07-05 02:28 UTCEPSS rescore
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  8. 2026-07-04 06:29 UTCEPSS rescore
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  10. 2026-07-01 15:04 UTCEPSS rescore
  11. 2026-06-30 23:20 UTCEPSS rescore
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  13. 2026-06-29 14:04 UTCEPSS rescore
  14. 2026-06-28 19:32 UTCOSV refresh
  15. 2026-06-28 14:06 UTCEPSS rescore
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  18. 2026-06-25 13:48 UTCEPSS rescore
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  20. 2026-06-24 14:03 UTCEPSS rescore
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  22. 2026-06-23 21:31 UTCEPSS rescore
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  24. 2026-06-22 14:24 UTCEPSS rescore
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  26. 2026-06-21 14:55 UTCEPSS rescore
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  28. 2026-06-21 01:58 UTCEPSS rescore
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  30. 2026-06-19 19:24 UTCEPSS rescore
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  32. 2026-06-18 17:51 UTCEPSS rescore
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  40. 2026-06-13 22:58 UTCEPSS rescore
  41. 2026-06-12 23:10 UTCEPSS rescore
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  43. 2026-06-11 13:58 UTCEPSS rescore
  44. 2026-06-11 13:58 UTCEPSS rescore
  45. 2026-06-11 13:09 UTCOSV refresh
  46. 2026-06-10 22:16 UTCEPSS rescore
  47. 2026-06-10 13:20 UTCEPSS rescore
  48. 2026-06-08 14:15 UTCEPSS rescore
  49. 2026-06-08 14:15 UTCEPSS rescore
  50. 2026-06-07 15:23 UTCEPSS rescore
  51. 2026-06-07 15:23 UTCEPSS rescore
  52. 2026-06-07 15:23 UTCEPSS rescore
  53. 2026-06-06 13:46 UTCEPSS rescore
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  55. 2026-06-05 22:45 UTCEPSS rescore
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  57. 2026-06-05 06:09 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-2764?
CVE-2022-2764 is a medium vulnerability published on September 1, 2022. A flaw was found in Undertow. Denial of service can be achieved as Undertow server waits for the LAST_CHUNK forever for EJB invocations.
When was CVE-2022-2764 disclosed?
CVE-2022-2764 was first published in the National Vulnerability Database on September 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-2022-2764 actively exploited?
CVE-2022-2764 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-2764?
CVE-2022-2764 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2022-2764?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-2764, 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.

Dependency Blast Radius

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