CVE-2020-10062

CRITICALNVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 5.8%, top 9% 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
9.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.0Exploit: NoneExposed: 0

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

An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

CVSS v3
9.0
EG Score
9.0(medium)
EPSS
85.2%
KEV
Not listed

Published

June 5, 2020

Last Modified

November 21, 2024

References (8)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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. 2026-07-11 08:24 UTCEPSS rescore
  2. 2026-07-09 19:06 UTCEPSS rescore
  3. 2026-07-08 15:11 UTCEPSS rescore
  4. 2026-07-07 13:43 UTCEPSS rescore
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  10. 2026-07-01 15:03 UTCEPSS rescore
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  12. 2026-06-30 23:20 UTCEPSS rescore
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  14. 2026-06-29 14:04 UTCEPSS rescore
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  16. 2026-06-28 14:05 UTCEPSS rescore
  17. 2026-06-28 04:54 UTCEPSS rescore
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  19. 2026-06-27 03:06 UTCEPSS rescore
  20. 2026-06-25 13:47 UTCEPSS rescore
  21. 2026-06-25 13:47 UTCEPSS rescore
  22. 2026-06-24 14:03 UTCEPSS rescore
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  24. 2026-06-23 21:31 UTCEPSS rescore
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  1. 2026-06-22 14:23 UTCEPSS rescore
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  3. 2026-06-19 19:23 UTCEPSS rescore
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  5. 2026-06-18 17:50 UTCEPSS rescore
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  7. 2026-06-17 17:50 UTCEPSS rescore
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  9. 2026-06-16 17:50 UTCEPSS rescore
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  11. 2026-06-15 17:46 UTCEPSS rescore
  12. 2026-06-13 22:58 UTCEPSS rescore
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  14. 2026-06-12 23:09 UTCEPSS rescore
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  16. 2026-06-10 22:16 UTCEPSS rescore
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  18. 2026-06-10 13:20 UTCEPSS rescore
  19. 2026-06-08 14:15 UTCEPSS rescore
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  21. 2026-06-07 15:23 UTCEPSS rescore
  22. 2026-06-07 15:23 UTCEPSS rescore
  23. 2026-06-06 13:45 UTCEPSS rescore
  24. 2026-06-06 13:45 UTCEPSS rescore
  25. 2026-06-06 13:45 UTCEPSS rescore
  26. 2026-06-05 22:45 UTCEPSS rescore
  27. 2026-06-05 22:45 UTCEPSS rescore
  28. 2026-06-05 06:08 UTCEPSS rescore
  29. 2026-06-04 13:10 UTCEPSS rescore
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  31. 2026-06-02 20:11 UTCEPSS rescore
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  33. 2026-06-01 13:50 UTCEPSS rescore
  34. 2026-05-31 22:29 UTCEPSS rescore
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  36. 2026-05-31 00:15 UTCEPSS rescore
  37. 2026-05-31 00:14 UTCEPSS rescore
  38. 2026-05-29 13:42 UTCEPSS rescore
  39. 2026-05-29 13:42 UTCEPSS rescore
  40. 2026-05-28 13:43 UTCEPSS rescore
  41. 2026-05-28 13:43 UTCEPSS rescore
  42. 2026-05-27 13:39 UTCEPSS rescore
  43. 2026-05-27 02:54 UTCEG score recompute
  44. 2026-05-27 02:54 UTCGHSA enrichment
  45. 2026-05-26 13:42 UTCEPSS rescore
  46. 2026-05-26 13:42 UTCEPSS rescore
  47. 2026-05-25 10:16 UTCOSV refresh

Frequently asked(5)

What is CVE-2020-10062?
CVE-2020-10062 is a critical vulnerability published on June 5, 2020. An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.
When was CVE-2020-10062 disclosed?
CVE-2020-10062 was first published in the National Vulnerability Database on June 5, 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-2020-10062 actively exploited?
CVE-2020-10062 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-10062?
CVE-2020-10062 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2020-10062?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-10062, 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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