CVE-2026-20346
published 2026-08-07CVE-2026-20346: A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded…
PriorityP346high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.45%
37.0th percentile
A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in PDF files during scanning, which may result in an out-of-bounds buffer read. 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 cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Affected
162 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
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VulDB
ClamAV PDF file format parser out-of-bounds (EUVD-2026-54530)
vuldb·2026-08-07·CVSS 7.5
CVE-2026-20346 [HIGH] ClamAV PDF file format parser out-of-bounds (EUVD-2026-54530)
A vulnerability classified as critical was found in ClamAV. This impacts an unknown function of the component PDF file format parser. Such manipulation leads to out-of-bounds read.
This vulnerability is traded as CVE-2026-20346. The attack may be launched remotely. There is no exploit available.
Upgrading the affected component is advised.
GHSA
A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruptio
ghsa_unreviewed·2026-08-07
CVE-2026-20346 [HIGH] CWE-125 A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruptio
A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in PDF files during scanning, which may result in an out-of-bounds buffer read. 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 cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
No detection rules found.
No public exploits indexed.
2026-08-07
Published