CVE-2024-8840 (GCVE-0-2024-8840)
Vulnerability from cvelistv5 – Published: 2024-11-22 21:05 – Updated: 2024-11-25 19:16
VLAI
EPSS
VEX
Title
PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability
Summary
PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of JB2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-24420.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-25 19:06 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| PDF-XChange | PDF-XChange Editor |
Affected:
10.3.0.386
|
guessed | |
| pdf-xchange | pdf-xchange_editor |
Affected:
10.3.0.386 , < 10.3.0.387
(custom)
cpe:2.3:a:pdf-xchange:pdf-xchange_editor:-:*:*:*:*:*:*:* |
Date Public
2024-09-17 16:26
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:pdf-xchange:pdf-xchange_editor:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "pdf-xchange_editor",
"vendor": "pdf-xchange",
"versions": [
{
"lessThan": "10.3.0.387",
"status": "affected",
"version": "10.3.0.386",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-8840",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-25T19:06:53.443743Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-11-25T19:16:23.750Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "PDF-XChange Editor",
"vendor": "PDF-XChange",
"versions": [
{
"status": "affected",
"version": "10.3.0.386"
}
]
}
],
"dateAssigned": "2024-09-13T18:16:40.024Z",
"datePublic": "2024-09-17T16:26:29.189Z",
"descriptions": [
{
"lang": "en",
"value": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of JB2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-24420."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125: Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-11-22T21:05:13.709Z",
"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"shortName": "zdi"
},
"references": [
{
"name": "ZDI-24-1263",
"tags": [
"x_research-advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1263/"
}
],
"source": {
"lang": "en",
"value": "Rocco Calvi (@TecR0c) with TecSecurity"
},
"title": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"assignerShortName": "zdi",
"cveId": "CVE-2024-8840",
"datePublished": "2024-11-22T21:05:13.709Z",
"dateReserved": "2024-09-13T18:16:39.947Z",
"dateUpdated": "2024-11-25T19:16:23.750Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-8840",
"date": "2026-10-30",
"epss": "0.00358",
"percentile": "0.29578"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:pdf-xchange:pdf-tools:10.3.0.386:*:*:*:*:*:*:*",
"matchCriteriaId": "C93EFAC4-4B02-41B1-A788-0A7FC98CD499",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:pdf-xchange:pdf-xchange_editor:10.3.0.386:*:*:*:*:*:*:*",
"matchCriteriaId": "207FF12C-548C-425F-9474-61148DBE69C2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of JB2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-24420."
},
{
"lang": "es",
"value": "Vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remoto en el an\u00e1lisis de archivos JB2 del editor PDF-XChange que no se encuentra dentro de los l\u00edmites de lectura. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas del editor PDF-XChange. Se requiere la interacci\u00f3n del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso. La falla espec\u00edfica existe en el an\u00e1lisis de archivos JB2. El problema es el resultado de la falta de una validaci\u00f3n adecuada de los datos proporcionados por el usuario, lo que puede resultar en una lectura m\u00e1s all\u00e1 del final de un b\u00fafer asignado. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. . Era ZDI-CAN-24420."
}
],
"id": "CVE-2024-8840",
"lastModified": "2024-12-04T14:42:12.897",
"metrics": {
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "zdi-disclosures@trendmicro.com",
"type": "Secondary"
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2024-11-22T21:15:22.537",
"references": [
{
"source": "zdi-disclosures@trendmicro.com",
"tags": [
"Third Party Advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1263/"
}
],
"sourceIdentifier": "zdi-disclosures@trendmicro.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "zdi-disclosures@trendmicro.com",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "PDF-XChange Editor",
"vendor": "PDF-XChange",
"versions": [
{
"status": "affected",
"version": "10.3.0.386"
}
]
}
],
"source": "zdi-disclosures@trendmicro.com"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:pdf-xchange:pdf-xchange_editor:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "pdf-xchange_editor",
"vendor": "pdf-xchange",
"versions": [
{
"lessThan": "10.3.0.387",
"status": "affected",
"version": "10.3.0.386",
"versionType": "custom"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:pdf-xchange:pdf-tools:10.3.0.386:*:*:*:*:*:*:*",
"matchCriteriaId": "C93EFAC4-4B02-41B1-A788-0A7FC98CD499",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:pdf-xchange:pdf-xchange_editor:10.3.0.386:*:*:*:*:*:*:*",
"matchCriteriaId": "207FF12C-548C-425F-9474-61148DBE69C2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of JB2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-24420."
},
{
"lang": "es",
"value": "Vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remoto en el an\u00e1lisis de archivos JB2 del editor PDF-XChange que no se encuentra dentro de los l\u00edmites de lectura. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas del editor PDF-XChange. Se requiere la interacci\u00f3n del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso. La falla espec\u00edfica existe en el an\u00e1lisis de archivos JB2. El problema es el resultado de la falta de una validaci\u00f3n adecuada de los datos proporcionados por el usuario, lo que puede resultar en una lectura m\u00e1s all\u00e1 del final de un b\u00fafer asignado. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. . Era ZDI-CAN-24420."
}
],
"id": "CVE-2024-8840",
"lastModified": "2026-06-17T08:23:24.043",
"metrics": {
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "zdi-disclosures@trendmicro.com",
"type": "Secondary"
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-8840",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-25T19:06:53.443743Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-11-22T21:15:22.537",
"references": [
{
"source": "zdi-disclosures@trendmicro.com",
"tags": [
"Third Party Advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1263/"
}
],
"sourceIdentifier": "zdi-disclosures@trendmicro.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "zdi-disclosures@trendmicro.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T09:24:28+00:00",
"cve": "CVE-2024-8840",
"id": "CVE-2024-8840",
"initial_release_date": "2024-09-17T16:26:29.189000+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-8840.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:pdf-xchange:pdf-xchange_editor:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "pdf-xchange_editor",
"vendor": "pdf-xchange",
"versions": [
{
"lessThan": "10.3.0.387",
"status": "affected",
"version": "10.3.0.386",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-8840",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-25T19:06:53.443743Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-11-25T19:06:54.821Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "PDF-XChange Editor",
"vendor": "PDF-XChange",
"versions": [
{
"status": "affected",
"version": "10.3.0.386"
}
]
}
],
"dateAssigned": "2024-09-13T18:16:40.024Z",
"datePublic": "2024-09-17T16:26:29.189Z",
"descriptions": [
{
"lang": "en",
"value": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of JB2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-24420."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125: Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-11-22T21:05:13.709Z",
"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"shortName": "zdi"
},
"references": [
{
"name": "ZDI-24-1263",
"tags": [
"x_research-advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1263/"
}
],
"source": {
"lang": "en",
"value": "Rocco Calvi (@TecR0c) with TecSecurity"
},
"title": "PDF-XChange Editor JB2 File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"assignerShortName": "zdi",
"cveId": "CVE-2024-8840",
"datePublished": "2024-11-22T21:05:13.709Z",
"dateReserved": "2024-09-13T18:16:39.947Z",
"dateUpdated": "2024-11-25T19:16:23.750Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
Loading…
Loading…
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.
Loading…
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.