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CVE-2023-46228

23
FAUCET Score

CVE-2023-46228 is an integer overflow vulnerability affecting zchunk versions prior to 1.3.2, specifically within its compression and multipart handling libraries. An attacker could exploit this by crafting a malicious zchunk file, leading to high impact on confidentiality, integrity, and availability if a user opens the file. While rated with a CVSS score of 7.8 (High), there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.2CPE matchmatch criteria
cpe:2.3:a:zchunk:zchunk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 17th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 zchunk 1.1.16-3 on CBL Mariner 2.0Fixed in: 1.1.16-3

Vendor Advisories (1)

microsoft2023-Oct/CVE-2023-46228Important

zchunk before 1.3.2 has multiple integer overflows via malformed zchunk files to lib/comp/comp.c lib/comp/zstd/zstd.c lib/dl/multipart.c or lib/header.c.

Oct 10, 2023

References

bugzilla.suse.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / zchunk/zchunk/commit/08aec2b4dfd7f709b6e3d511411ffcc83ed4efbe
Patch
github.com / zchunk/zchunk/compare/1.3.1...1.3.2
Patch