CVE-2020-24427
Status: ModifiedLow (3.3)—
Acrobat Reader versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by an input validation vulnerability when decoding a crafted codec that could result in the disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- Base score: 3.3
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 2.45%
- Percentile among all scored CVEs: 84
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (4)
CWEs
- CWE-20
References
Raw JSON (NVD)
Show
{
"id": "CVE-2020-24427",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 4.3,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@adobe.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 3.3,
"attackVector": "LOCAL",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 1.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 3.3,
"attackVector": "LOCAL",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "psirt@adobe.com",
"affectedData": [
{
"vendor": "Adobe",
"product": "Acrobat Reader",
"versions": [
{
"status": "affected",
"version": "unspecified",
"versionType": "custom",
"lessThanOrEqual": "2017.011.30175"
},
{
"status": "affected",
"version": "unspecified",
"versionType": "custom",
"lessThanOrEqual": "2020.012.20048"
},
{
"status": "affected",
"version": "unspecified",
"versionType": "custom",
"lessThanOrEqual": "2020.001.30005"
},
{
"status": "affected",
"version": "unspecified",
"versionType": "custom",
"lessThanOrEqual": "None"
}
]
}
]
}
],
"published": "2020-11-05T20:15:15.927",
"references": [
{
"url": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html",
"tags": [
"Vendor Advisory"
],
"source": "psirt@adobe.com"
},
{
"url": "https://helpx.adobe.com/security/products/acrobat/apsb20-67.html",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@adobe.com",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Acrobat Reader versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by an input validation vulnerability when decoding a crafted codec that could result in the disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
},
{
"lang": "es",
"value": "Acrobat Reader versiones 2020.012.20048 (y anteriores), 2020.001.30005 (y anteriores) y 2017.011.30175 (y anteriores) están afectadas por una vulnerabilidad de comprobación de entrada al decodificar un códec diseñado que podría resultar en una divulgación de memoria confidencial. Un atacante podría aprovechar esta vulnerabilidad para omitir mitigaciones como ASLR. Una explotación de este problema requiere una interacción del usuario, ya que la víctima debe abrir un archivo malicioso"
}
],
"lastModified": "2026-06-17T03:05:35.237",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FFF9FEEB-BA17-484C-BC81-A19A5363F06F",
"versionEndIncluding": "20.001.30005"
},
{
"criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F942D471-C285-496A-908B-45E5BCC66B50",
"versionEndIncluding": "17.011.30175"
},
{
"criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5D8BEE5A-4D08-4EC1-8126-5ADDF8E315BE",
"versionEndIncluding": "20.012.20048"
},
{
"criteria": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*",
"vulnerable": true,
"matchCriteriaId": "35912D0F-9492-47B3-A1B8-6D88115FF599",
"versionEndIncluding": "20.001.30005"
},
{
"criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FF5AF6C5-A98F-4A45-A757-E652B7A1F5AB",
"versionEndIncluding": "17.011.30175"
},
{
"criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FD0E32F7-E377-41D5-A10C-5EB041FD02D4",
"versionEndIncluding": "20.012.20048"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"
},
{
"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "psirt@adobe.com"
}