CVE-2026-20216

A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:cisco:secure_endpoint::::::macos::*
	cpe:2.3:a:cisco:secure_endpoint::::::linux::*
	cpe:2.3:a:cisco:secure_endpoint::::::windows::*

Configuration 2 (hide)

OR	cpe:2.3:a:clamav:clamav::::::::
	cpe:2.3:a:clamav:clamav::::::::

History

09 Jul 2026, 18:09

Type	Values Removed	Values Added
References	~~() https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR -~~	() https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR - Vendor Advisory
First Time		Cisco secure Endpoint Cisco Clamav clamav Clamav
CPE		cpe:2.3:a:cisco:secure_endpoint::::::windows::* cpe:2.3:a:cisco:secure_endpoint::::::linux::* cpe:2.3:a:cisco:secure_endpoint::::::macos::* cpe:2.3:a:clamav:clamav::::::::

01 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 17:16

Updated : 2026-07-09 18:09

NVD link : CVE-2026-20216

Mitre link : CVE-2026-20216

CVE.ORG link : CVE-2026-20216

JSON object : View

Products Affected

clamav

clamav

cisco

secure_endpoint

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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{"status": "affected", "version": "7.4.1.20425"}, {"status": "affected", "version": "7.4.1.20439"}, {"status": "affected", "version": "7.4.3"}, {"status": "affected", "version": "7.4.3.20679"}, {"status": "affected", "version": "7.4.5"}, {"status": "affected", "version": "7.5.1.20813"}, {"status": "affected", "version": "7.5.1.20833"}, {"status": "affected", "version": "7.5.3"}, {"status": "affected", "version": "7.5.5"}, {"status": "affected", "version": "8.0.1.21160"}, {"status": "affected", "version": "8.0.1.21164"}, {"status": "affected", "version": "7.5.7"}, {"status": "affected", "version": "7.5.9"}, {"status": "affected", "version": "7.5.11"}, {"status": "affected", "version": "8.1.7.21585"}, {"status": "affected", "version": "7.5.13.21586"}, {"status": "affected", "version": "7.5.13.21598"}, {"status": "affected", "version": "8.2.1.21612"}, {"status": "affected", "version": "8.2.1.21650"}, {"status": "affected", "version": "7.5.15.21611"}, {"status": "affected", "version": 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"description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\n\r\nThis vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software."}], "lastModified": "2026-07-09T18:09:19.380", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "E534D1FF-B590-40F3-9874-AC2BDA807087", "versionEndExcluding": "1.27.2"}, {"criteria": "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*", "vulnerable": true, "matchCriteriaId": "CB2B4CBA-534A-4111-8920-8580B12C4F46", "versionEndExcluding": "1.29.0"}, {"criteria": "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*", "vulnerable": true, "matchCriteriaId": "4EB7F99A-01AB-44EE-B682-5E2C9E7D2A4B", "versionEndExcluding": "8.6.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CD23E971-4735-4C28-BFE1-AB807630F2EE", "versionEndExcluding": "1.4.5"}, {"criteria": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5CC3C470-BBC6-449E-80F1-F9E762442D3C", "versionEndExcluding": "1.5.3", "versionStartIncluding": "1.5.0"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@cisco.com"}