CVE-2024-4978

CRITICALNVD 8.49.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-05-29), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.4 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: 27%CVSS: 8.4Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

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

Justice AV Solutions Viewer Setup 8.3.7.250-1 contains a malicious binary when executed and is signed with an unexpected authenticode signature. A remote, privileged threat actor may exploit this vulnerability to execute of unauthorized PowerShell commands.

CVSS v3
8.4
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
27%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

May 23, 2024

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Jun 2, 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-2024-4978
generic

CVE-2024-4978: Backdoored Justice AV Solutions Viewer Software Used in Apparent Supply Chain Attack | Rapid7 Blog

https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack/
generic
https://twitter.com/2RunJack2/status/1775052981966377148

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 46× in last 7d / 230× 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 475 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2024-4978?
CVE-2024-4978 is a critical vulnerability published on May 23, 2024. Justice AV Solutions Viewer Setup 8.3.7.250-1 contains a malicious binary when executed and is signed with an unexpected authenticode signature. A remote, privileged threat actor may exploit this vulnerability to execute of unauthorized PowerShell commands.
When was CVE-2024-4978 disclosed?
CVE-2024-4978 was first published in the National Vulnerability Database on May 23, 2024, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-4978 actively exploited?
Yes. CISA added CVE-2024-4978 to the Known Exploited Vulnerabilities catalog on May 29, 2024, affecting Justice AV Solutions Viewer . KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2024-4978?
CVE-2024-4978 has a CVSS v3 base score of 8.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2024-4978?
CVE-2024-4978 affects Justice AV Solutions Viewer . 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-2024-4978?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-4978, 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

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