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.
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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Cisco | Cisco Secure Endpoint | unknown |
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Advisories
| Source | ID | Title |
|---|---|---|
 Ubuntu USN |
USN-8517-1 | ClamAV vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 04 Jul 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Wed, 01 Jul 2026 18:30:00 +0000
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ssvc
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Wed, 01 Jul 2026 17:15:00 +0000
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| 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. | |
| Title | ClamAV 7Zip File Format Processing Out-of-Bounds Memory Corruption Vulnerability | |
| Weaknesses | CWE-120 | |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-07-01T17:25:08.547Z
Reserved: 2025-10-08T11:59:15.398Z
Link: CVE-2026-20215
Vulnrichment
Updated: 2026-07-01T17:20:57.025Z
NVD
No data.
Redhat
OpenCVE Enrichment
Updated: 2026-07-25T22:15:03Z
Weaknesses