How severe is CVE-2023-46228?

CVE-2023-46228 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-46228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-46228?

CVE-2023-46228 affects Zchunk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-46228?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-46228 published?

CVE-2023-46228 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2023-46228

CVE-2023-46228 is a high-severity vulnerability in Zchunk with a CVSS 3.x base score of 7.8. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Zchunk
Published: 2023-10-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-46228?: 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.
How severe is CVE-2023-46228?: CVE-2023-46228 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-46228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-46228?: CVE-2023-46228 affects Zchunk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-46228?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-46228 published?: CVE-2023-46228 was published on 2023-10-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zchunk:zchunk:*:*:*:*:*:*:*:*

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