How severe is CVE-2019-11463?

CVE-2019-11463 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-2019-11463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11463?

CVE-2019-11463 affects Libarchive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11463?

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

When was CVE-2019-11463 published?

CVE-2019-11463 was published on 2019-04-23 and last updated on 2026-06-17.

CVE-2019-11463

CVE-2019-11463 is a medium-severity vulnerability in Libarchive 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Libarchive
Published: 2019-04-23
Last modified: 2026-06-17

Description

A memory leak in archive_read_format_zip_cleanup in archive_read_support_format_zip.c in libarchive 3.3.4-dev allows remote attackers to cause a denial of service via a crafted ZIP file because of a HAVE_LZMA_H typo. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected.

Frequently asked questions

What is CVE-2019-11463?: A memory leak in archive_read_format_zip_cleanup in archive_read_support_format_zip.c in libarchive 3.3.4-dev allows remote attackers to cause a denial of service via a crafted ZIP file because of a HAVE_LZMA_H typo. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected.
How severe is CVE-2019-11463?: CVE-2019-11463 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-2019-11463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11463?: CVE-2019-11463 affects Libarchive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-11463 published?: CVE-2019-11463 was published on 2019-04-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*

More vulnerabilities in Libarchive

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CVE-2020-9308 — High (CVSS 8.8): archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or…
CVE-2018-1000878 — High (CVSS 8.8): libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416:…
CVE-2018-1000877 — High (CVSS 8.8): libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415:…
CVE-2016-1541 — High (CVSS 8.8): Heap-based buffer overflow in the zip_read_mac_metadata function in archive_read_support_format_zip.c in libarchive…

All CVEs affecting Libarchive →

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