CVE-2021-22962

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 91.0%, top 0% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Elevated
9.1EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 91%
CISA-KEV: Not listedEPSS PROB: 91%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

An attacker can send a specially crafted request which could lead to leakage of sensitive data or potentially a resource-based DoS attack.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
82(Track*)
EG Risk 82/100SSVC: 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
Severity91% × 45%
Exploitation91% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
91%
EPSS %ILE
100%
KEV
Not listed

Published

December 19, 2023

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 22, 2026
No patch confirmed yet.
generic
https://download.wavelink.com/Files/avalanche_v6.4.2_release_notes.txt

Data Freshness Timeline

(refreshed 1× in last 7d / 13× 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. 2026-08-03 10:32 UTCEPSS rescore
  2. 2026-07-30 01:27 UTCEPSS rescore
  3. 2026-07-30 01:27 UTCEPSS rescore
  4. 2026-07-24 14:15 UTCEPSS rescore
  5. 2026-07-23 01:57 UTCEG score recompute
  6. 2026-07-22 21:23 UTCEG score recompute▲ 1.80
  7. 2026-07-22 21:23 UTCGHSA enrichment
  8. 2026-07-22 14:05 UTCEPSS rescore
  9. 2026-07-13 22:27 UTCEPSS rescore
  10. 2026-07-13 22:27 UTCEPSS rescore
  11. 2026-07-12 05:44 UTCEPSS rescore
  12. 2026-07-12 05:44 UTCEPSS rescore
  13. 2026-07-11 08:25 UTCEPSS rescore
  14. 2026-07-02 16:57 UTCEPSS rescore
  15. 2026-06-24 14:03 UTCEPSS rescore
  16. 2026-06-24 14:03 UTCEPSS rescore
  17. 2026-06-23 21:31 UTCEPSS rescore
  18. 2026-06-23 21:31 UTCEPSS rescore
  19. 2026-06-15 17:46 UTCEPSS rescore
  20. 2026-06-14 23:15 UTCEPSS rescore
  21. 2026-06-13 22:58 UTCEPSS rescore
  22. 2026-06-12 23:10 UTCEPSS rescore
  23. 2026-06-12 23:10 UTCEPSS rescore
  24. 2026-06-11 13:58 UTCEPSS rescore
  25. 2026-06-10 22:16 UTCEPSS rescore
Show 29 more
  1. 2026-06-10 22:16 UTCEPSS rescore
  2. 2026-06-10 13:20 UTCEPSS rescore
  3. 2026-06-08 14:15 UTCEPSS rescore
  4. 2026-06-08 14:15 UTCEPSS rescore
  5. 2026-06-07 15:23 UTCEPSS rescore
  6. 2026-06-07 15:23 UTCEPSS rescore
  7. 2026-06-06 13:46 UTCEPSS rescore
  8. 2026-06-06 13:46 UTCEPSS rescore
  9. 2026-06-06 13:46 UTCEPSS rescore
  10. 2026-06-05 22:45 UTCEPSS rescore
  11. 2026-06-05 22:45 UTCEPSS rescore
  12. 2026-06-05 06:09 UTCEPSS rescore
  13. 2026-06-05 06:09 UTCEPSS rescore
  14. 2026-06-05 06:08 UTCEPSS rescore
  15. 2026-06-02 20:11 UTCEPSS rescore
  16. 2026-06-02 20:11 UTCEPSS rescore
  17. 2026-06-01 13:50 UTCEPSS rescore
  18. 2026-06-01 13:50 UTCEPSS rescore
  19. 2026-05-31 22:29 UTCEPSS rescore
  20. 2026-05-31 22:29 UTCEPSS rescore
  21. 2026-05-29 13:42 UTCEPSS rescore
  22. 2026-05-28 13:43 UTCEPSS rescore
  23. 2026-05-28 13:43 UTCEPSS rescore
  24. 2026-05-27 13:39 UTCEPSS rescore
  25. 2026-05-26 13:42 UTCEPSS rescore
  26. 2026-05-26 13:42 UTCEPSS rescore
  27. 2026-05-24 16:49 UTCEPSS rescore
  28. 2026-05-24 11:46 UTCEG score recompute
  29. 2026-05-24 11:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-22962?
CVE-2021-22962 is a critical vulnerability published on December 19, 2023. An attacker can send a specially crafted request which could lead to leakage of sensitive data or potentially a resource-based DoS attack.
When was CVE-2021-22962 disclosed?
CVE-2021-22962 was first published in the National Vulnerability Database on December 19, 2023, 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-2021-22962 actively exploited?
CVE-2021-22962 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91% probability of exploitation in the next 30 days, which ranks it in the top 0.2% of all scored CVEs.
What is the CVSS score of CVE-2021-22962?
CVE-2021-22962 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2021-22962?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-22962, 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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