How severe is CVE-2024-20380?

CVE-2024-20380 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-20380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20380?

CVE-2024-20380 primarily affects Clamav. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20380?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-20380 have an EU (EUVD) identifier?

Yes. CVE-2024-20380 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18095.

When was CVE-2024-20380 published?

CVE-2024-20380 was published on 2024-04-18 and last updated on 2026-06-17.

CVE-2024-20380

CVE-2024-20380 is a high-severity vulnerability in Clamav with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-475.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18095
Weakness: CWE-475
Affected product: Clamav
Published: 2024-04-18
Last modified: 2026-06-17

Description

A vulnerability in the HTML parser of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an issue in the C to Rust foreign function interface. An attacker could exploit this vulnerability by submitting a crafted file containing HTML content to be scanned by ClamAV on an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

Frequently asked questions

What is CVE-2024-20380?: A vulnerability in the HTML parser of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an issue in the C to Rust foreign function interface. An attacker could exploit this vulnerability by submitting a crafted file containing HTML content to be scanned by ClamAV on an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
How severe is CVE-2024-20380?: CVE-2024-20380 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-20380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20380?: CVE-2024-20380 primarily affects Clamav. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20380?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-20380 have an EU (EUVD) identifier?: Yes. CVE-2024-20380 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18095.
When was CVE-2024-20380 published?: CVE-2024-20380 was published on 2024-04-18 and last updated on 2026-06-17.

References

https://blog.clamav.net/2024/04/clamav-131-123-106-patch-versions.html

Affected products (3)

cpe:2.3:a:clamav:clamav:1.3.0:-:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.3.0:rc:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.3.0:rc2:*:*:*:*:*:*

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