CVE-2025-20128

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Source
https://cve.org/CVERecord?id=CVE-2025-20128
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-20128.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-20128
Downstream
Related
Published
2025-01-22T17:15:12.583Z
Modified
2026-03-19T04:40:55.695908Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

References

Affected packages

Git / github.com/cisco-talos/clamav

Affected ranges

Type
GIT
Repo
https://github.com/cisco-talos/clamav
Events
Introduced
09f373f82ad0978e267cc9b795aa93d7f8e8b7d2
Fixed
9a2c6425ad4c5a2a38bf641c8e4631243805dcd1
Introduced
2a21451e1f3585ac99cd15c3c06371fa478dfad1
Fixed
98882f5f019ded3b96bacc17a9d1d65fb96dd686
Database specific 
{
    "versions": [
        {
            "introduced": "1.0.0"
        },
        {
            "fixed": "1.0.8"
        },
        {
            "introduced": "1.1.0"
        },
        {
            "fixed": "1.4.2"
        }
    ]
}

Affected versions

clamav-1.*
clamav-1.0.0
clamav-1.0.1
clamav-1.0.2
clamav-1.0.3
clamav-1.0.4
clamav-1.0.5
clamav-1.0.6
clamav-1.0.7
clamav-1.1.0
clamav-1.1.0-rc
clamav-1.2.0
clamav-1.2.0-rc
clamav-1.3.0
clamav-1.3.0-rc
clamav-1.3.0-rc2
clamav-1.4.0
clamav-1.4.0-rc
clamav-1.4.1

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "1.24.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "1.25.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "7.5.20"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "8.0.1.21160"
            },
            {
                "fixed": "8.4.3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "4.2.0"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-20128.json"