CVE-2021-2257

MEDIUMNVD 4.14.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.1 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.1Exploit: None knownExposed: 0

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

Vulnerability in the Oracle Storage Cloud Software Appliance product of Oracle Storage Gateway (component: Management Console). The supported version that is affected is Prior to 16.3.1.4.2. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Storage Cloud Software Appliance. While the vulnerability is in Oracle Storage Cloud Software Appliance, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Storage Cloud Software Appliance accessible data. Note: Updating the Oracle Storage Cloud Software Appliance to version 16.3.1.4.2 or later will address these vulnerabilities. Download the latest version of Oracle Storage Cloud Software Appliance from here. Refer to Document 2768897.1 for more details. CVSS 3.1 Base Score 4.1 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N).

CVSS v3
4.1
EG Score
4.1(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity41% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

April 22, 2021

Last Modified

November 21, 2024

References (2)

Data Freshness Timeline

(refreshed 8× in last 7d / 35× 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 130 total refreshes for this CVE.

  1. 2026-08-20 22:52 UTCEPSS rescore
  2. 2026-08-19 17:01 UTCEPSS rescore
  3. 2026-08-18 13:45 UTCEPSS rescore
  4. 2026-08-17 13:44 UTCEPSS rescore
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  20. 2026-08-02 02:24 UTCEPSS rescore
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  22. 2026-07-30 16:25 UTCEPSS rescore
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  24. 2026-07-30 01:28 UTCEPSS rescore
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  1. 2026-07-28 15:33 UTCEPSS rescore
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  6. 2026-07-23 14:16 UTCEPSS rescore
  7. 2026-07-23 01:57 UTCEG score recompute
  8. 2026-07-22 22:44 UTCEG score recompute
  9. 2026-07-22 14:06 UTCEPSS rescore
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  11. 2026-07-21 15:22 UTCEPSS rescore
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  13. 2026-07-20 17:05 UTCEPSS rescore
  14. 2026-07-19 14:28 UTCEPSS rescore
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  19. 2026-07-16 17:00 UTCEPSS rescore
  20. 2026-07-15 16:55 UTCEPSS rescore
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  22. 2026-07-15 01:58 UTCEPSS rescore
  23. 2026-07-13 22:27 UTCEPSS rescore
  24. 2026-07-13 22:27 UTCEPSS rescore
  25. 2026-07-13 06:10 UTCEPSS rescore
  26. 2026-07-12 05:44 UTCEPSS rescore
  27. 2026-07-12 05:44 UTCEPSS rescore
  28. 2026-07-11 08:25 UTCEPSS rescore
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  30. 2026-07-09 19:07 UTCEPSS rescore
  31. 2026-07-08 15:12 UTCEPSS rescore
  32. 2026-07-07 13:43 UTCEPSS rescore
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  35. 2026-07-06 02:21 UTCEPSS rescore
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  40. 2026-07-02 16:57 UTCEPSS rescore
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  42. 2026-06-30 23:20 UTCEPSS rescore
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  44. 2026-06-29 14:04 UTCEPSS rescore
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  48. 2026-06-27 03:06 UTCEPSS rescore
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  50. 2026-06-25 13:48 UTCEPSS rescore
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  54. 2026-06-23 21:31 UTCEPSS rescore
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  56. 2026-06-22 14:24 UTCEPSS rescore
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  58. 2026-06-21 14:55 UTCEPSS rescore
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  60. 2026-06-21 01:58 UTCEPSS rescore
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  62. 2026-06-19 19:24 UTCEPSS rescore
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  64. 2026-06-18 17:51 UTCEPSS rescore
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  66. 2026-06-17 17:51 UTCEPSS rescore
  67. 2026-06-16 17:51 UTCEPSS rescore
  68. 2026-06-15 17:46 UTCEPSS rescore
  69. 2026-06-14 23:15 UTCEPSS rescore
  70. 2026-06-13 22:58 UTCEPSS rescore
  71. 2026-06-13 22:58 UTCEPSS rescore
  72. 2026-06-12 23:10 UTCEPSS rescore
  73. 2026-06-11 13:58 UTCEPSS rescore
  74. 2026-06-10 22:16 UTCEPSS rescore
  75. 2026-06-10 13:20 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-2257?
CVE-2021-2257 is a medium vulnerability published on April 22, 2021. Vulnerability in the Oracle Storage Cloud Software Appliance product of Oracle Storage Gateway (component: Management Console). The supported version that is affected is Prior to 16.3.1.4.2. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise…
When was CVE-2021-2257 disclosed?
CVE-2021-2257 was first published in the National Vulnerability Database on April 22, 2021, 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-2021-2257 actively exploited?
CVE-2021-2257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.0% of all scored CVEs.
What is the CVSS score of CVE-2021-2257?
CVE-2021-2257 has a CVSS v3 base score of 4.1 (NVD).
How do I remediate CVE-2021-2257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-2257, 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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