p PatchFirst

PatchFirst · Latest vulnerabilities

clamav vulnerabilities

Vulnerabilities published for clamav in the last 30 days: 0. Listed in the KEV catalogue: 0.

Filter vulnerabilities
Clear filters

Vulnerabilities: 28

  1. CVE-2026-20348

    High · CVSS 7.5EPSS 0.72%Fix available

    ClamAV XAR File Format Processing Memory Corruption Vulnerability

    A vulnerability in the XAR 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 XAR files during scanning. An attacker could exploit this vulnerability by submitting a crafted file that contains XAR 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.

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  2. CVE-2026-20345

    High · CVSS 7.5EPSS 0.56%Fix available

    ClamAV GPT File Format Processing Memory Corruption Vulnerability

    A vulnerability in the GPT 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 handling of an endian conversion operation, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted GPT 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.

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  3. CVE-2026-20339

    High · CVSS 7.5EPSS 0.56%Fix available

    ClamAV PESpin File Format Processing Integer Overflow Vulnerability

    A vulnerability in the PESpin 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 PESpin files during scanning, which may result in an integer overflow. An attacker could exploit this vulnerability by submitting a crafted file that contains PESpin 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

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  4. CVE-2026-20347

    High · CVSS 7.5EPSS 0.56%Fix available

    ClamAV Mach-O File Format Processing Memory Corruption Vulnerability

    A vulnerability in the Mach-O 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 Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O 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

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  5. CVE-2026-20346

    High · CVSS 7.5EPSS 0.54%Fix available

    ClamAV PDF File Format Processing Memory Corruption Vulnerability

    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.

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  6. CVE-2026-20338

    High · CVSS 7.5EPSS 0.56%Fix available

    ClamAV ZIP File Format Processing Memory Corruption Vulnerability

    A vulnerability in the zip archive parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper memory handling when processing content in zip files during scanning. An attacker could exploit this vulnerability by submitting a crafted zip file for scanning. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate as a result of a memory double-free, resulting in a DoS condition on the affected software.

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  7. CVE-2026-20337

    High · CVSS 7.5EPSS 0.6%Fix available

    ClamAV ZIP File Format Processing Memory Corruption Vulnerability

    A vulnerability in the zip archive parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper boundary checks for content in zip files during scanning, which may result in an out-of-bounds write condition. An attacker could exploit this vulnerability by submitting a crafted zip file for scanning. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

    • Update to 1.5.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  8. CVE-2026-20243

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV ALZ Archive Processing Denial of Service Vulnerability

    A vulnerability in the ALZ 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 ALZ 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 ALZ 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 th

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  9. CVE-2026-20244

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV DMG File Processing Denial of Service Vulnerability

    A vulnerability in the DMG 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 DMG files during scanning, which may result in an integer overflow on 32-bit platforms only. An attacker could exploit this vulnerability by submitting a crafted file that contains DMG 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

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  10. CVE-2026-20215

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV 7Zip File Format Processing Out-of-Bounds Memory Corruption Vulnerability

    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

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  11. CVE-2026-20217

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability

    A vulnerability in the PESpin 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 PESpin 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 PESpin 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 condit

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  12. CVE-2026-20216

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV InstallShield File Format Processing Resource Exhaustion Vulnerability

    A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software.

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  13. CVE-2026-20213

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV PE File Format Processing Out-of-Bounds Memory Corruption Vulnerability

    A vulnerability in the PE 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 PE 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 PE 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 a

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  14. CVE-2026-20214

    High · CVSS 7.5EPSS 0.57%Fix available

    ClamAV FSG File Format Processing Out-of-Bounds Memory Corruption Vulnerability

    A vulnerability in the FSG 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 FSG 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 portable executable content compressed with FSG to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate

    • Update to 1.5.3+dfsg-0ubuntu0.22.04.2
    Published Updated
  15. CVE-2026-20031

    Medium · CVSS 5.3EPSS 0.44%Fix available

    ClamAV CSS Image Parsing Error Handling Denial of Service Vulnerability

    A vulnerability in the HTML Cascading Style Sheets (CSS) module 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 improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.

    • Update to 1.4.4+dfsg-0ubuntu0.22.04.1
    Published Updated
  16. CVE-2025-20260

    Critical · CVSS 9.8EPSS 1.63%Fix available

    ClamAV PDF Scanning Buffer Overflow Vulnerability

    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 soft

    • Update to 1.4.3+dfsg-0ubuntu0.22.04.1
    Published Updated
  17. CVE-2025-20234

    Medium · CVSS 5.3EPSS 0.82%Fix available

    ClamAV UDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

    A vulnerability in Universal Disk Format (UDF) processing 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 a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF 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 .

    • Update to 1.4.3+dfsg-0ubuntu0.22.04.1
    Published Updated
  18. CVE-2024-20506

    Medium · CVSS 6.1EPSS 0.32%Fix available

    ClamAV Privilege Handling Escalation Vulnerability

    A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files. The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the Clam

    • Update to 0.103.12+dfsg-0ubuntu0.22.04.1
    Published Updated
  19. CVE-2024-20505

    Medium · CVSS 4EPSS 0.56%Fix available

    ClamAV Memory Handling DoS

    A vulnerability in the PDF parsing module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an out of bounds read. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. An exploit could allow the attacker to terminate the scanning process.

    • Update to 0.103.12+dfsg-0ubuntu0.22.04.1
    Published Updated

Check your server

Check your installed stack and versions against the current vulnerability feeds.

Check your server →