How severe is CVE-2019-1789?

CVE-2019-1789 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-2019-1789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1789?

CVE-2019-1789 affects Clamav. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1789?

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.

When was CVE-2019-1789 published?

CVE-2019-1789 was published on 2019-11-05 and last updated on 2026-06-17.

CVE-2019-1789

CVE-2019-1789 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Clamav
Published: 2019-11-05
Last modified: 2026-06-17

Description

ClamAV versions prior to 0.101.2 are susceptible to a denial of service (DoS) vulnerability. An out-of-bounds heap read condition may occur when scanning PE files. An example is Windows EXE and DLL files that have been packed using Aspack as a result of inadequate bound-checking.

Frequently asked questions

What is CVE-2019-1789?: ClamAV versions prior to 0.101.2 are susceptible to a denial of service (DoS) vulnerability. An out-of-bounds heap read condition may occur when scanning PE files. An example is Windows EXE and DLL files that have been packed using Aspack as a result of inadequate bound-checking.
How severe is CVE-2019-1789?: CVE-2019-1789 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-2019-1789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1789?: CVE-2019-1789 affects Clamav. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-1789?: 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.
When was CVE-2019-1789 published?: CVE-2019-1789 was published on 2019-11-05 and last updated on 2026-06-17.

References

https://blog.clamav.net/2019/03/clamav-01012-and-01003-patches-have.html

Affected products (1)

cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*

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