CVE-2024-20328 | ClamAV VirusEvent File Processing Command Injection Vulnerability

A vulnerability in the VirusEvent feature of ClamAV could allow a local attacker to inject arbitrary commands with the privileges of the application service account.The vulnerability is due to unsafe handling of file names. A local attacker could exploit this vulnerability by supplying a file name containing command-line sequences. When processed on a system using configuration options for the VirusEvent feature, the attacker could cause the application to execute arbitrary commands. ClamAV has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Published: 2024-03-01 Last update: 2025-11-04 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-20328 is rated Moderate Risk (40.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.31%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-20328

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-20 0.25% 0.31% +0.07%
2 2026-04-10 0.27% 0.25% -0.02%
3 2026-03-27 — 0.27% —

Full EPSS history (36 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20328

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.8 3.4 [email protected]

Weakness enumeration for CVE-2024-20328

OS Trackers for CVE-2024-20328

vendor priority summary link
alpine — CVE-2024-20328: 1 source package rows (clamav); 9 state rows across 5 repos (3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 5, open 4. https://security.alpinelinux.org/vuln/CVE-2024-20328
debian unimportant CVE-2024-20328 unimportant priority: Debian including 1 source packages (clamav), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-20328
gentoo normal CVE-2024-20328: 1 GLSA(s) (202507-03), 1 atom(s) (app-antivirus/clamav); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-20328
suse high CVE-2024-20328 severity important: SUSE including 10 source package names (clamav, clamav-devel, …), 137 product×package rows across 33 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7.1, … (33 product lines)): Known Not Affected 137. https://www.suse.com/security/cve/CVE-2024-20328/
ubuntu medium CVE-2024-20328 medium priority: Ubuntu including 1 source packages (clamav), 8 status rows across 8 suites (bionic, focal, jammy, mantic, noble, trusty, upstream, xenial): not-affected 5, released 3. https://ubuntu.com/security/CVE-2024-20328

Affected software / configurations for CVE-2024-20328

Vendor Product Version Raw CPE
clamav clamav >= 1.0.0, < 1.0.5 cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
clamav clamav >= 1.2.0, < 1.2.2 cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*

References for CVE-2024-20328

cvelogic Threat Intelligence