CVE-2025-20260

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-20260
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-20260.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-20260
Downstream
Related
Published
2025-06-18T18:15:23Z
Modified
2025-08-11T21:05:56.861275Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on an affected device.

This vulnerability exists because memory buffers are allocated incorrectly when PDF files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the affected software. Although unproven, there is also a possibility that an attacker could leverage the buffer overflow to execute arbitrary code with the privileges of the ClamAV process.

References

Affected packages

Debian:11 / clamav

Package

Name
clamav
Purl
pkg:deb/debian/clamav?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.103.2+dfsg-2
0.103.3+dfsg-0+deb11u1
0.103.3+dfsg-1
0.103.4+dfsg-0+deb11u1
0.103.4+dfsg-1
0.103.5+dfsg-0+deb11u1
0.103.5+dfsg-1
0.103.6+dfsg-0+deb11u1
0.103.6+dfsg-1
0.103.7+dfsg-0+deb11u1
0.103.7+dfsg-1
0.103.8+dfsg-0+deb11u1
0.103.9+dfsg-0+deb11u1
0.103.10+dfsg-0+deb11u1

1.*

1.0.0+dfsg-1
1.0.0+dfsg-2
1.0.0+dfsg-3
1.0.0+dfsg-4
1.0.0+dfsg-5
1.0.0+dfsg-6
1.0.1+dfsg-1
1.0.1+dfsg-2
1.0.2+dfsg-1~deb12u1
1.0.2+dfsg-1
1.0.3+dfsg-1~deb12u1
1.0.3+dfsg-1
1.0.3+dfsg-2
1.0.4+dfsg-1
1.0.5+dfsg-1~deb12u1
1.0.5+dfsg-1
1.0.5+dfsg-1.1
1.0.6+dfsg-1
1.0.7+dfsg-1~deb11u1
1.0.7+dfsg-1~deb11u2
1.0.7+dfsg-1~deb12u1
1.0.9+dfsg-1~deb12u1
1.2.1+dfsg-1
1.2.1+dfsg-2
1.2.1+dfsg-3
1.3.1+dfsg-1
1.3.1+dfsg-2
1.3.1+dfsg-3
1.3.1+dfsg-4
1.3.1+dfsg-5
1.4.1+dfsg-1
1.4.2+dfsg-1
1.4.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / clamav

Package

Name
clamav
Purl
pkg:deb/debian/clamav?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1+dfsg-2
1.0.2+dfsg-1~deb12u1
1.0.2+dfsg-1
1.0.3+dfsg-1~deb12u1
1.0.3+dfsg-1
1.0.3+dfsg-2
1.0.4+dfsg-1
1.0.5+dfsg-1~deb12u1
1.0.5+dfsg-1
1.0.5+dfsg-1.1
1.0.6+dfsg-1
1.0.7+dfsg-1~deb11u1
1.0.7+dfsg-1~deb11u2
1.0.7+dfsg-1~deb12u1
1.0.9+dfsg-1~deb12u1
1.2.1+dfsg-1
1.2.1+dfsg-2
1.2.1+dfsg-3
1.3.1+dfsg-1
1.3.1+dfsg-2
1.3.1+dfsg-3
1.3.1+dfsg-4
1.3.1+dfsg-5
1.4.1+dfsg-1
1.4.2+dfsg-1
1.4.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / clamav

Package

Name
clamav
Purl
pkg:deb/debian/clamav?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / clamav

Package

Name
clamav
Purl
pkg:deb/debian/clamav?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.3+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}