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No exploitation reportedFix available

CVE-2023-20032

No exploitation reported by the sources we read.

  • Published2023-03-01
  • Fixed in8.1.5 · 7.5.9 · 1.21.1 · 1.20.2
  • WeaknessCWE-120 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the HFS+ partition 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 execute arbitrary code. This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process, or else crash the process, resulting in a denial of service (DoS) condition. For a description of this vulnerability, see the ClamAV blog ["https://blog.clamav.net/"].

Timeline

dates in UTC
  1. 2023-03-0108:15CVE publishedNVD
  2. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-20032?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20032?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco secure endpoint
BranchAffectedFixed in
8.x≥ 8.0.1.21160, < 8.1.58.1.5
7.5< 7.5.97.5.9
1.21< 1.21.11.21.1
1.20< 1.20.21.20.2
Cisco web security appliance
BranchAffectedFixed in
15.0≥ 15.0.0, < 15.0.0-25415.0.0-254
14.5≥ 14.5.0, < 14.5.1-01314.5.1-013
14.0≥ 14.0.0, < 14.0.4-00514.0.4-005
12.5< 12.5.612.5.6
Stormshield stormshield network security
BranchAffectedFixed in
4.x≥ 4.4.0, < 4.6.44.6.4
4.3≥ 4.3.0, < 4.3.174.3.17
3.x≥ 3.8.0, < 3.11.233.11.23
3.x≥ 3.0.0, < 3.7.353.7.35

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Cisco secure endpoint to 8.1.5 · 7.5.9 · 1.21.1 · 1.20.2

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CNACVSS 3.19.8read 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-120read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score29.3 %read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-03-01
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-20032?

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the HFS+ partition 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 execute arbitrary code. This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process, or else crash the process, resulting in a denial of service (DoS) condition. For a description of this vulnerability, see the ClamAV blog ["https://blog.clamav.net/"].

Is CVE-2023-20032 actively exploited?

Active exploitation of CVE-2023-20032 has not been confirmed. Its EPSS score was 29.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-20032?

CVE-2023-20032 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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