CVE-2020-24074

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 2.0% (80th percentile of EPSS-scored CVEs). 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
9.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.0%CVSS: 9.8Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

The decode program in silk-v3-decoder Version:20160922 Build By kn007 does not strictly check data, resulting in a buffer overflow.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
2.0%
EPSS %ILE
80th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 9, 2020

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Oct 4, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit d21659950266 (kn007/silk-v3-decoder)

Fix landed in kn007/silk-v3-decoder commit d21659950266 — awaiting tagged release

https://github.com/kn007/silk-v3-decoder/commit/d216599502662db01c07cc0dfd95ff1f1eaaea02

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 27× 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 170 total refreshes for this CVE.

  1. 2026-10-09 20:04 UTCEPSS rescore
  2. 2026-10-08 16:38 UTCEPSS rescore
  3. 2026-10-07 23:44 UTCEPSS rescore
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  8. 2026-09-30 15:15 UTCEG score recompute
  9. 2026-09-30 14:59 UTCEPSS rescore
  10. 2026-09-27 13:40 UTCEPSS rescore
  11. 2026-09-26 16:50 UTCOSV refresh
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  1. 2026-09-11 14:48 UTCEPSS rescore
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  5. 2026-09-07 15:57 UTCEPSS rescore
  6. 2026-09-07 02:18 UTCOSV refresh
  7. 2026-09-06 13:44 UTCEPSS rescore
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  9. 2026-09-04 13:57 UTCEPSS rescore
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  20. 2026-08-20 12:01 UTCOSV refresh
  21. 2026-08-19 17:00 UTCEPSS rescore
  22. 2026-08-18 13:44 UTCEPSS rescore
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  27. 2026-08-13 21:57 UTCEPSS rescore
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  31. 2026-08-06 13:43 UTCEPSS rescore
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  33. 2026-08-05 07:40 UTCOSV refresh
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  47. 2026-07-23 14:15 UTCEPSS rescore
  48. 2026-07-23 14:15 UTCEPSS rescore
  49. 2026-07-23 01:51 UTCEG score recompute
  50. 2026-07-22 22:37 UTCEG score recompute
  51. 2026-07-22 14:05 UTCEPSS rescore
  52. 2026-07-21 15:22 UTCEPSS rescore
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  54. 2026-07-20 17:04 UTCEPSS rescore
  55. 2026-07-20 17:04 UTCEPSS rescore
  56. 2026-07-19 14:28 UTCEPSS rescore
  57. 2026-07-19 05:52 UTCOSV refresh
  58. 2026-07-19 02:26 UTCEPSS rescore
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  68. 2026-07-12 05:44 UTCEPSS rescore
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  71. 2026-07-09 19:07 UTCEPSS rescore
  72. 2026-07-08 15:12 UTCEPSS rescore
  73. 2026-07-07 13:43 UTCEPSS rescore
  74. 2026-07-07 13:43 UTCEPSS rescore
  75. 2026-07-06 16:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2020-24074?
CVE-2020-24074 is a critical vulnerability published on September 9, 2020. The decode program in silk-v3-decoder Version:20160922 Build By kn007 does not strictly check data, resulting in a buffer overflow.
When was CVE-2020-24074 disclosed?
CVE-2020-24074 was first published on September 9, 2020, 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-2020-24074 actively exploited?
CVE-2020-24074 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% probability of exploitation in the next 30 days (80th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-24074?
CVE-2020-24074 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-24074?
An upstream fix for CVE-2020-24074 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

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