How severe is CVE-2018-18384?

CVE-2018-18384 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-18384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18384?

CVE-2018-18384 affects Unzip Project Unzip. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18384?

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

When was CVE-2018-18384 published?

CVE-2018-18384 was published on 2018-10-16 and last updated on 2026-06-17.

CVE-2018-18384

CVE-2018-18384 is a medium-severity vulnerability in Unzip Project Unzip with a CVSS 3.x base score of 5.5. 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Unzip Project Unzip
Published: 2018-10-16
Last modified: 2026-06-17

Description

Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.

Frequently asked questions

What is CVE-2018-18384?: Info-ZIP UnZip 6.0 has a buffer overflow in list.c, when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value, because a buffer size is 10 and is supposed to be 12.
How severe is CVE-2018-18384?: CVE-2018-18384 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-18384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18384?: CVE-2018-18384 affects Unzip Project Unzip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-18384 published?: CVE-2018-18384 was published on 2018-10-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:unzip_project:unzip:6.0:*:*:*:*:*:*:*

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