CVE-2020-8243

CRITICALNVD 7.29.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.2 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 91%CVSS: 7.2Exploit: cisa kev · ssvc active · epss top5pct · epss highExposed: 0

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

A vulnerability in the Pulse Connect Secure < 9.1R8.2 admin web interface could allow an authenticated attacker to upload custom template to perform an arbitrary code execution.

CVSS v3
7.2
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
91%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

September 30, 2020

Last Modified

December 18, 2025

Advisory Details (1)

Auto-updated Jun 11, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8243

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 53× in last 7d / 213× 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 810 total refreshes for this CVE.

  1. 2026-09-25 15:49 UTCGHSA enrichment
  2. 2026-09-25 14:55 UTCCISA KEV update
  3. 2026-09-25 11:37 UTCGHSA enrichment
  4. 2026-09-25 07:25 UTCGHSA enrichment
  5. 2026-09-25 03:13 UTCGHSA enrichment
  6. 2026-09-24 23:01 UTCGHSA enrichment
  7. 2026-09-24 19:31 UTCCISA KEV update
  8. 2026-09-24 18:49 UTCGHSA enrichment
  9. 2026-09-24 14:37 UTCEG score recompute
  10. 2026-09-24 14:37 UTCGHSA enrichment
  11. 2026-09-24 14:00 UTCEPSS rescore
  12. 2026-09-24 10:25 UTCGHSA enrichment
  13. 2026-09-24 06:13 UTCGHSA enrichment
  14. 2026-09-24 02:00 UTCGHSA enrichment
  15. 2026-09-23 21:48 UTCGHSA enrichment
  16. 2026-09-23 17:36 UTCGHSA enrichment
  17. 2026-09-23 13:24 UTCGHSA enrichment
  18. 2026-09-23 09:12 UTCGHSA enrichment
  19. 2026-09-23 05:00 UTCGHSA enrichment
  20. 2026-09-23 00:48 UTCGHSA enrichment
  21. 2026-09-22 20:36 UTCGHSA enrichment
  22. 2026-09-22 19:36 UTCCISA KEV update
  23. 2026-09-22 16:24 UTCEG score recompute
  24. 2026-09-22 16:24 UTCGHSA enrichment
  25. 2026-09-22 14:44 UTCEPSS rescore
Show 75 more
  1. 2026-09-22 12:12 UTCGHSA enrichment
  2. 2026-09-22 07:58 UTCGHSA enrichment
  3. 2026-09-22 03:46 UTCGHSA enrichment
  4. 2026-09-21 23:34 UTCEG score recompute
  5. 2026-09-21 23:34 UTCGHSA enrichment
  6. 2026-09-21 20:28 UTCEPSS rescore
  7. 2026-09-21 19:21 UTCGHSA enrichment
  8. 2026-09-21 19:09 UTCCISA KEV update
  9. 2026-09-21 15:09 UTCGHSA enrichment
  10. 2026-09-21 10:56 UTCGHSA enrichment
  11. 2026-09-21 06:43 UTCGHSA enrichment
  12. 2026-09-21 02:31 UTCGHSA enrichment
  13. 2026-09-20 22:19 UTCGHSA enrichment
  14. 2026-09-20 18:06 UTCGHSA enrichment
  15. 2026-09-20 13:54 UTCGHSA enrichment
  16. 2026-09-20 09:42 UTCGHSA enrichment
  17. 2026-09-20 05:30 UTCGHSA enrichment
  18. 2026-09-20 01:18 UTCGHSA enrichment
  19. 2026-09-19 21:06 UTCGHSA enrichment
  20. 2026-09-19 16:54 UTCGHSA enrichment
  21. 2026-09-19 12:42 UTCGHSA enrichment
  22. 2026-09-19 08:29 UTCGHSA enrichment
  23. 2026-09-19 04:17 UTCGHSA enrichment
  24. 2026-09-19 00:05 UTCGHSA enrichment
  25. 2026-09-18 19:53 UTCEG score recompute
  26. 2026-09-18 19:53 UTCGHSA enrichment
  27. 2026-09-18 19:23 UTCEPSS rescore
  28. 2026-09-18 19:20 UTCCISA KEV update
  29. 2026-09-18 15:40 UTCGHSA enrichment
  30. 2026-09-18 14:15 UTCCISA KEV update
  31. 2026-09-18 11:26 UTCGHSA enrichment
  32. 2026-09-18 07:14 UTCGHSA enrichment
  33. 2026-09-18 03:02 UTCGHSA enrichment
  34. 2026-09-17 22:50 UTCGHSA enrichment
  35. 2026-09-17 18:35 UTCGHSA enrichment
  36. 2026-09-17 14:22 UTCGHSA enrichment
  37. 2026-09-17 10:10 UTCGHSA enrichment
  38. 2026-09-17 05:57 UTCGHSA enrichment
  39. 2026-09-17 01:45 UTCGHSA enrichment
  40. 2026-09-16 21:33 UTCGHSA enrichment
  41. 2026-09-16 17:20 UTCGHSA enrichment
  42. 2026-09-16 14:10 UTCCISA KEV update
  43. 2026-09-16 13:05 UTCGHSA enrichment
  44. 2026-09-16 08:53 UTCGHSA enrichment
  45. 2026-09-16 04:41 UTCGHSA enrichment
  46. 2026-09-16 00:28 UTCGHSA enrichment
  47. 2026-09-15 20:13 UTCGHSA enrichment
  48. 2026-09-15 16:01 UTCGHSA enrichment
  49. 2026-09-15 11:47 UTCGHSA enrichment
  50. 2026-09-15 07:35 UTCGHSA enrichment
  51. 2026-09-15 03:23 UTCEG score recompute
  52. 2026-09-15 03:23 UTCGHSA enrichment
  53. 2026-09-15 03:06 UTCEPSS rescore
  54. 2026-09-14 23:11 UTCGHSA enrichment
  55. 2026-09-14 19:24 UTCCISA KEV update
  56. 2026-09-14 18:59 UTCGHSA enrichment
  57. 2026-09-14 14:47 UTCGHSA enrichment
  58. 2026-09-14 10:35 UTCGHSA enrichment
  59. 2026-09-14 06:23 UTCGHSA enrichment
  60. 2026-09-14 02:11 UTCGHSA enrichment
  61. 2026-09-13 21:59 UTCGHSA enrichment
  62. 2026-09-13 17:47 UTCGHSA enrichment
  63. 2026-09-13 13:35 UTCGHSA enrichment
  64. 2026-09-13 09:23 UTCGHSA enrichment
  65. 2026-09-13 05:10 UTCGHSA enrichment
  66. 2026-09-13 00:58 UTCGHSA enrichment
  67. 2026-09-12 20:46 UTCGHSA enrichment
  68. 2026-09-12 16:34 UTCGHSA enrichment
  69. 2026-09-12 12:22 UTCGHSA enrichment
  70. 2026-09-12 08:10 UTCGHSA enrichment
  71. 2026-09-12 03:58 UTCGHSA enrichment
  72. 2026-09-11 23:46 UTCGHSA enrichment
  73. 2026-09-11 19:34 UTCGHSA enrichment
  74. 2026-09-11 18:49 UTCCISA KEV update
  75. 2026-09-11 15:22 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2020-8243?
CVE-2020-8243 is a critical vulnerability published on September 30, 2020. A vulnerability in the Pulse Connect Secure < 9.1R8.2 admin web interface could allow an authenticated attacker to upload custom template to perform an arbitrary code execution.
When was CVE-2020-8243 disclosed?
CVE-2020-8243 was first published in the National Vulnerability Database on September 30, 2020, with the most recent update on December 18, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-8243 actively exploited?
Yes. CISA added CVE-2020-8243 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Ivanti Pulse Connect Secure. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-8243?
CVE-2020-8243 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2020-8243?
CVE-2020-8243 affects Ivanti Pulse Connect Secure. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-8243?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8243, 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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