ClamAV 7Zip File Format Processing Out-of-Bounds Memory Corruption Vulnerability
Summary
| CVE | CVE-2026-20215 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-01 17:16:29 UTC |
| Updated | 2026-07-06 14:43:08 UTC |
| Description | A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.003890000 probability, percentile 0.309150000 (date 2026-07-06)
Problem Types: CWE-120 | CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSSV3_1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Cisco | Secure Endpoint | All | All | All | All |
| Application | Cisco | Secure Endpoint | All | All | All | All |
| Application | Cisco | Secure Endpoint | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Secure Endpoint | affected 7.0.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.2.19 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.2.13 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.1.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.3.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.2.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.2.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.2.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.1.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.3.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.2.9 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.1.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.2.11 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.2.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.1.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.3.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.9 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.2.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.1.9 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.0.9 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.2.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.0.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 6.3.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.8.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.11.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.10.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.8.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.10.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.6 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.14.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.10.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.6.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.9.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.11.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.7.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.13.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.8.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.13.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.9.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.12.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.13.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.7.21512 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.3.21242 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.5.21322 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.7.21417 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.14.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.6 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.16.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.16.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.16.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.16.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.18.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.18.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.21.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.21.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.21.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.21.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.22.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.22.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.22.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.22.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.22.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.26.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.24.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.26.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.27.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.15.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.17.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.17.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.17.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.19.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.4 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.6 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.23.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.23.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.20.8 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.25.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.25.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.25.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.27.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 1.27.2 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.13 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.3.15 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.1 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.1.20425 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.1.20439 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.3.20679 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.4.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.1.20813 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.1.20833 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.5 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.0.1.21160 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.0.1.21164 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.7 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.9 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.11 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.1.7.21585 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.13.21586 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.13.21598 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.2.1.21612 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.2.1.21650 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.15.21611 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.17.21680 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.2.3.30119 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.2.4.30130 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.0 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.19 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.1.30298 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.2.30317 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.1.30307 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.20 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.3 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.4.30419 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.4.30467 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 7.5.21.21732 | Not specified |
| CNA | Cisco | Cisco Secure Endpoint | affected 8.4.5.30483 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav... | [email protected] | sec.cloudapps.cisco.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
There are currently no legacy QID mappings associated with this CVE.