How severe is CVE-2023-20052?

CVE-2023-20052 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-20052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20052?

CVE-2023-20052 primarily affects Cisco Secure Endpoint. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20052?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20052 published?

CVE-2023-20052 was published on 2023-03-01 and last updated on 2026-06-17.

CVE-2023-20052

CVE-2023-20052 is a medium-severity vulnerability in Cisco Secure Endpoint with a CVSS 3.x base score of 5.3. 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-776.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-776
Affected product: Cisco Secure Endpoint
Published: 2023-03-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-20052?: 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 severe is CVE-2023-20052?: CVE-2023-20052 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-20052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20052?: CVE-2023-20052 primarily affects Cisco Secure Endpoint. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20052 published?: CVE-2023-20052 was published on 2023-03-01 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-xxe-TcSZduhN

Affected products (9)

cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*
cpe:2.3:a:cisco:secure_endpoint_private_cloud:*:*:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.0.0:-:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.0.0:rc:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:1.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*

More vulnerabilities in Cisco Secure Endpoint

CVE-2023-20032 — Critical (CVSS 9.8): On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the…
CVE-2022-20770 — High (CVSS 8.6): On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2…
CVE-2026-20215 — High (CVSS 7.5): A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS…
CVE-2026-20214 — High (CVSS 7.5): A vulnerability in the FSG file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS…
CVE-2026-20213 — High (CVSS 7.5): A vulnerability in the PE file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS…
CVE-2024-20290 — High (CVSS 7.5): A vulnerability in the OLE2 file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a…

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Other CWE-776 vulnerabilities

CVE-2019-19144 — Critical (CVSS 9.8): XML External Entity Injection vulnerability in Quantum DXi6702 2.3.0.3 (11449-53631 Build304) devices via…
CVE-2022-23640 — Critical (CVSS 9.8): Excel-Streaming-Reader is an easy-to-use implementation of a streaming Excel reader using Apache POI. Prior to…
CVE-2014-2228 — Critical (CVSS 9.8): The XStream extension in HP Fortify SCA before 2.2 RC3 allows remote attackers to execute arbitrary code via unsafe…
CVE-2013-4335 — Critical (CVSS 9.8): opOpenSocialPlugin 0.8.2.1, > 0.9.9.2, 0.9.13, 1.2.6: Multiple XML External Entity Injection Vulnerabilities
CVE-2021-23926 — Critical (CVSS 9.1): The XML parsers used by XMLBeans up to version 2.6.0 did not set the properties needed to protect the user from…
CVE-2020-24590 — Critical (CVSS 9.1): The Management Console in WSO2 API Manager through 3.1.0 and API Microgateway 2.2.0 allows XML Entity Expansion attacks.

Browse all CWE-776 vulnerabilities →