CVE-2020-9256

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 55% 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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: None knownExposed: 0

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

Huawei Mate 30 Pro smartphones with versions earlier than 10.1.0.150(C00E136R5P3) have an improper authorization vulnerability. The system does not properly restrict the use of system service by applications, the attacker should trick the user into installing a malicious application, successful exploit could cause a denial of audio service.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity65% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

July 18, 2020

Last Modified

November 21, 2024

References (2)

Data Freshness Timeline

(refreshed 7× 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 126 total refreshes for this CVE.

  1. 2026-08-19 17:00 UTCEPSS rescore
  2. 2026-08-18 13:44 UTCEPSS rescore
  3. 2026-08-17 13:43 UTCEPSS rescore
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  25. 2026-07-23 14:15 UTCEPSS rescore
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  1. 2026-07-23 01:55 UTCEG score recompute
  2. 2026-07-22 22:41 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  6. 2026-07-20 17:04 UTCEPSS rescore
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  8. 2026-07-19 14:28 UTCEPSS rescore
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  21. 2026-07-12 05:44 UTCEPSS rescore
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  23. 2026-07-11 08:25 UTCEPSS rescore
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  25. 2026-07-09 19:07 UTCEPSS rescore
  26. 2026-07-08 15:12 UTCEPSS rescore
  27. 2026-07-07 13:43 UTCEPSS rescore
  28. 2026-07-06 16:25 UTCEPSS rescore
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  37. 2026-06-30 23:20 UTCEPSS rescore
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  39. 2026-06-29 14:04 UTCEPSS rescore
  40. 2026-06-28 14:05 UTCEPSS rescore
  41. 2026-06-28 04:54 UTCEPSS rescore
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  43. 2026-06-27 03:06 UTCEPSS rescore
  44. 2026-06-27 03:06 UTCEPSS rescore
  45. 2026-06-25 13:48 UTCEPSS rescore
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  47. 2026-06-24 14:03 UTCEPSS rescore
  48. 2026-06-24 14:03 UTCEPSS rescore
  49. 2026-06-23 21:31 UTCEPSS rescore
  50. 2026-06-23 21:31 UTCEPSS rescore
  51. 2026-06-22 14:23 UTCEPSS rescore
  52. 2026-06-21 14:54 UTCEPSS rescore
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  54. 2026-06-21 01:57 UTCEPSS rescore
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  56. 2026-06-19 19:24 UTCEPSS rescore
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  58. 2026-06-18 17:51 UTCEPSS rescore
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  60. 2026-06-17 17:50 UTCEPSS rescore
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  62. 2026-06-15 17:46 UTCEPSS rescore
  63. 2026-06-14 23:15 UTCEPSS rescore
  64. 2026-06-13 22:58 UTCEPSS rescore
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  66. 2026-06-12 23:10 UTCEPSS rescore
  67. 2026-06-12 23:10 UTCEPSS rescore
  68. 2026-06-11 13:58 UTCEPSS rescore
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  70. 2026-06-10 22:16 UTCEPSS rescore
  71. 2026-06-10 13:20 UTCEPSS rescore
  72. 2026-06-08 14:15 UTCEPSS rescore
  73. 2026-06-07 15:23 UTCEPSS rescore
  74. 2026-06-07 15:23 UTCEPSS rescore
  75. 2026-06-06 13:46 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-9256?
CVE-2020-9256 is a medium vulnerability published on July 18, 2020. Huawei Mate 30 Pro smartphones with versions earlier than 10.1.0.150(C00E136R5P3) have an improper authorization vulnerability. The system does not properly restrict the use of system service by applications, the attacker should trick the user into installing a malicious application, successful…
When was CVE-2020-9256 disclosed?
CVE-2020-9256 was first published in the National Vulnerability Database on July 18, 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-2020-9256 actively exploited?
CVE-2020-9256 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 53.6% of all scored CVEs.
What is the CVSS score of CVE-2020-9256?
CVE-2020-9256 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2020-9256?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-9256, 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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