CVE-2024-4978 (GCVE-0-2024-4978)
Vulnerability from cvelistv5 – Published: 2024-05-23 01:56 – Updated: 2025-10-21 23:05Title
Malicious Code in Justice AV Solutions (JAVS) Viewer
Summary
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.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-30 11:12 UTC
CWE
- CWE-506 - Embedded Malicious Code
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Justice AV Solutions | Viewer |
Affected:
8.3.7.250
|
guessed | |
| javs | viewer |
Affected:
8.3.7.250
cpe:2.3:a:javs:viewer:8.3.7.250:*:*:*:*:*:*:* |
Date Public
2024-05-23 00:30
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9d176767-103d-4f9e-b482-d765fea24103
Exploited: Yes
Timestamps
First Seen: 2024-05-29
Asserted: 2024-05-29
Scope
Notes: KEV entry: Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability | Affected: Justice AV Solutions / Viewer | Description: Justice AV Solutions (JAVS) Viewer installer contains a malicious version of ffmpeg.exe, named fffmpeg.exe (SHA256: 421a4ad2615941b177b6ec4ab5e239c14e62af2ab07c6df1741e2a62223223c4). When run, this creates a backdoor connection to a malicious C2 server. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-06-19 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): Please follow the vendor’s instructions as outlined in the public statements at https://www.rapid7.com/blog/post/2024/05/23/cve-2024-4978-backdoored-justice-av-solutions-viewer-software-used-in-apparent-supply-chain-attack#remediation and https://www.javs.com/downloads; https://nvd.nist.gov/vuln/detail/CVE-2024-4978
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-506 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Viewer |
| Due Date | 2024-06-19 |
| Date Added | 2024-05-29 |
| Vendorproject | Justice AV Solutions |
| Vulnerabilityname | Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:26 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: acc019bb-2ecd-46bf-9064-da56fa3e5f74
Exploited: Yes
Timestamps
First Seen: 2024-05-29
Asserted: 2024-05-29
Scope
Notes: KEVIntel entry: Malicious Code in Justice AV Solutions (JAVS) Viewer | Affected: Justice AV Solutions / Viewer | CVSS: 8.7 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Malicious Code in Justice AV Solutions (JAVS) Viewer |
| Vendor | Justice AV Solutions |
| Product | Viewer |
| Added Date | 2024-05-29T00:00:00.000Z |
| Cvss Score | 8.7 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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"modifiedAttackRequirements": "NOT_DEFINED",
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"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
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"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
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},
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],
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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