CVE-2023-43208

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-05-20), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 83%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · epss high · public exploitExposed: 0

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

NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
83%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

October 26, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Sep 14, 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-2023-43208
generic

NextGen Mirth Connect RCE | Horizon3

https://www.horizon3.ai/nextgen-mirth-connect-remote-code-execution-vulnerability-cve-2023-43208/

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 244× 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 884 total refreshes for this CVE.

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

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (8 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCaz4rvs/Mirth-Connect-CVE-2023-43208
    First seen Feb 26, 2026

    Python implementation of CVE-2023-43208 Mirth Connect RCE (Unauth XStream)

    Open source ↗
  • GitHub PoCazrvs/Mirth-Connect-CVE-2023-43208
    First seen Feb 26, 2026

    Python implementation of CVE-2023-43208 Mirth Connect RCE (Unauth XStream)

    Open source ↗
  • GitHub PoCpredyy/CVE-2023-43208
    First seen Feb 25, 2026

    PoC for CVE-2023-43208 RCE exploitation.

    Open source ↗
  • GitHub PoCMKIRAHMET/PoC-2023-43208
    First seen Feb 24, 2026

    A proof-of-concept exploit for CVE-2023-43208, a remote code execution vulnerability in Mirth Connect before version 4.4.1.

    Open source ↗
  • GitHub PoCkyakei/CVE-2023-43208
    First seen Feb 22, 2026

    CVE-2023-43208: Mirth Connect Pre-Auth RCE PoC

    Open source ↗
  • GitHub PoCAvento/CVE-2023-43208_Detection_PoC
    First seen Nov 28, 2024

    Use java.net.InetAddress for detection

    Open source ↗
  • GitHub PoCjakabakos/CVE-2023-43208-mirth-connect-rce-poc
    First seen Mar 17, 2024
    Open source ↗
  • GitHub PoCK3ysTr0K3R/CVE-2023-43208-EXPLOIT
    First seen Mar 15, 2024

    A PoC exploit for CVE-2023-43208 - Mirth Connect Remote Code Execution (RCE)

    Open source ↗
  • Metasploitexploit/multi/http/mirth_connect_cve_2023_43208✓ verified
    First seen Oct 25, 2023

    Mirth Connect Deserialization RCE

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-43208.yaml
    First seen Jan 1, 2023

    NextGen Healthcare Mirth Connect - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2023-43208?
CVE-2023-43208 is a critical vulnerability published on October 26, 2023. NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.
When was CVE-2023-43208 disclosed?
CVE-2023-43208 was first published in the National Vulnerability Database on October 26, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-43208 actively exploited?
Yes. CISA added CVE-2023-43208 to the Known Exploited Vulnerabilities catalog on May 20, 2024, affecting NextGen Healthcare Mirth Connect. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-43208?
CVE-2023-43208 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2023-43208?
CVE-2023-43208 affects NextGen Healthcare Mirth Connect. 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-2023-43208?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43208, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-43208

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