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CVE-2023-20052

22
FAUCET Score

CVE-2023-20052 is a medium-severity vulnerability in the ClamAV scanning library's DMG file parser, affecting ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier, as well as Cisco and Stormshield products utilizing ClamAV. This flaw, due to XML external entity injection, allows an unauthenticated, remote attacker to leak sensitive information. An attacker could exploit this by submitting a specially crafted DMG file for scanning. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.20.2CPE matchmatch criteria
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*
< 1.21.1CPE matchmatch criteria
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*
< 7.5.9CPE matchmatch criteria
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*
>= 8.0.1.21160, < 8.1.5CPE matchmatch criteria
cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*
< 3.6.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_endpoint_private_cloud:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.00%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0700 is in the 91st percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: cbl2 clamav 0.105.2-1 on CBL Mariner 2.0Fixed in: 0.105.2-1
microsoftpatch availablevia msrc
Product: 18402-16823Fixed in: 0.105.2-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 0.105.2-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 0.105.2-1
ciscovendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

microsoft2023-Mar/CVE-2023-20052

CVE-2023-20052

Mar 14, 2023
microsoft2023-Feb/CVE-2023-20052Moderate

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.

Feb 14, 2023

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-xxe-TcSZduhN
Vendor Advisory