CVE-2023-20052
MEDIUMEPSS 94th pctlDescription
On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the DMG file parser of ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability is due to enabling XML entity substitution that may result in XML external entity injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file that may be read by the ClamAV scanning process.
How to fix
This Ubuntu release reached end-of-life on 2019-04-02.
This Ubuntu release reached end-of-life on 2021-04-02.
This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.
This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.
This Ubuntu release reached end-of-life on 2023-07-20.
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploit Intelligence
High risk: more likely to be exploited than 94% of all known CVEs.
References
Related Vulnerabilities
Other CWE-611 (XML External Entity (XXE)) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-34102 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2019-9670 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2022-28219 | Critical | 9.8 | 97% | - | - |
| CVE-2024-22024 | High | 8.3 | 95% | - | - |
| CVE-2024-38653 | High | 7.5 | 92% | - | - |
| CVE-2017-12629 | Critical | 9.8 | 92% | - | Fix |
Common questions
How do I fix CVE-2023-20052?
Published advisories record a fix for 17 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2023-20052 being actively exploited?
Not that we know of. CVE-2023-20052 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.
How severe is CVE-2023-20052?
CVE-2023-20052 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-20052 affect?
Published advisories record a fix for clamav (Amazon), clamav-data (Amazon), clamav-debuginfo (Amazon), clamav-debugsource (Amazon), and 13 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.