VDB
ALPINE-CVE-2021-1404
ALPINE-CVE-2021-1404
PUBLISHED
CVSS 7.5 HIGH
A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.12 | clamav | 0.97.4-r0, 0.99.4-r1, 0.99.4-r0 |
| Alpine:v3.13 | clamav | 0.99.4-r1, 0.100.0-r0, 0.100.0-r1 |
| Alpine:v3.11 | clamav | 0.99.4-r1, 0.99.4-r0, 0.99.3-r3 |
Timeline
- Apr 8, 2021 CVE Published
- Nov 19, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch