CVE-2020-3458

MEDIUMNVD 6.76.7—
EchelonGraph scoreMEDIUM confidence

Score 6.7 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, nvd
6.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.7Exploit: NoneExposed: 0

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

Multiple vulnerabilities in the secure boot process of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software for the Firepower 1000 Series and Firepower 2100 Series Appliances could allow an authenticated, local attacker to bypass the secure boot mechanism. The vulnerabilities are due to insufficient protections of the secure boot process. An attacker could exploit these vulnerabilities by injecting code into specific files that are then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device, which would be executed at each boot and maintain persistence across reboots.

CVSS v3
6.7
EG Score
6.7(medium)
EPSS
23.5%
KEV
Not listed

Published

October 21, 2020

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 08:25 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:07 UTCEPSS rescore
  4. 2026-07-08 15:12 UTCEPSS rescore
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  11. 2026-06-30 23:20 UTCEPSS rescore
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  13. 2026-06-29 14:04 UTCEPSS rescore
  14. 2026-06-28 04:54 UTCEPSS rescore
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  16. 2026-06-27 03:06 UTCEPSS rescore
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  18. 2026-06-25 13:48 UTCEPSS rescore
  19. 2026-06-24 14:03 UTCEPSS rescore
  20. 2026-06-24 14:03 UTCEPSS rescore
  21. 2026-06-23 21:31 UTCEPSS rescore
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  1. 2026-06-21 14:54 UTCEPSS rescore
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  3. 2026-06-19 19:24 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
  8. 2026-06-16 17:50 UTCEPSS rescore
  9. 2026-06-15 17:46 UTCEPSS rescore
  10. 2026-06-14 23:15 UTCEPSS rescore
  11. 2026-06-13 22:58 UTCEPSS rescore
  12. 2026-06-12 23:10 UTCEPSS rescore
  13. 2026-06-11 13:58 UTCEPSS rescore
  14. 2026-06-10 22:16 UTCEPSS rescore
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  20. 2026-06-06 13:46 UTCEPSS rescore
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  22. 2026-06-05 22:45 UTCEPSS rescore
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  24. 2026-06-05 06:08 UTCEPSS rescore
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  26. 2026-06-04 13:10 UTCEPSS rescore
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  28. 2026-06-02 20:11 UTCEPSS rescore
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  30. 2026-06-01 13:50 UTCEPSS rescore
  31. 2026-05-31 22:29 UTCEPSS rescore
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  35. 2026-05-29 13:42 UTCEPSS rescore
  36. 2026-05-28 13:43 UTCEPSS rescore
  37. 2026-05-28 13:43 UTCEPSS rescore
  38. 2026-05-27 13:39 UTCEPSS rescore
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  40. 2026-05-26 13:42 UTCEPSS rescore
  41. 2026-05-26 13:42 UTCEPSS rescore
  42. 2026-05-26 07:17 UTCEPSS rescore
  43. 2026-05-26 07:17 UTCEPSS rescore
  44. 2026-05-23 06:15 UTCEG score recompute
  45. 2026-05-23 06:15 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-3458?
CVE-2020-3458 is a medium vulnerability published on October 21, 2020. Multiple vulnerabilities in the secure boot process of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software for the Firepower 1000 Series and Firepower 2100 Series Appliances could allow an authenticated, local attacker to bypass the secure boot mechanism.…
When was CVE-2020-3458 disclosed?
CVE-2020-3458 was first published in the National Vulnerability Database on October 21, 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-2020-3458 actively exploited?
CVE-2020-3458 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-3458?
CVE-2020-3458 has a CVSS v3 base score of 6.7 (NVD).
How do I remediate CVE-2020-3458?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-3458, 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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