CVE-2021-22509

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2024-08-28. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

A vulnerability identified in storing and reusing information in Advance Authentication. This issue can lead to leakage of sensitive data to unauthorized user. The issue affects NetIQ Advance Authentication before 6.3.5.1

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
10.0%
KEV
Not listed

Published

August 28, 2024

Last Modified

September 13, 2024

References (1)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 45× 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. 2026-07-23 01:57 UTCEG score recompute
  2. 2026-07-22 22:44 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
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  72. 2026-05-23 11:54 UTCEG score recompute
  73. 2026-05-23 11:54 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2021-22509?
CVE-2021-22509 is a high vulnerability published on August 28, 2024. A vulnerability identified in storing and reusing information in Advance Authentication. This issue can lead to leakage of sensitive data to unauthorized user. The issue affects NetIQ Advance Authentication before 6.3.5.1
When was CVE-2021-22509 disclosed?
CVE-2021-22509 was first published in the National Vulnerability Database on August 28, 2024, with the most recent update on September 13, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-22509 actively exploited?
CVE-2021-22509 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-22509?
CVE-2021-22509 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2021-22509?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-22509, 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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