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 61× in last 7d / 264× 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 942 total refreshes for this CVE.

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