CVE-2019-17582Public exploit

Process crash via duplicate archive-buffer cleanup

Published Feb 9, 2021 · Updated Aug 5, 2024

Use-after-free in libzip 1.2.0 allows attackers to crash a consuming application that opens a malformed ZIP archive. An error path in _zip_dirent_read frees its temporary archive buffer, then later cleanup calls _zip_buffer_free on the same allocation and reads released heap memory. Reaching the flaw requires an application to open the crafted archive; the demonstrated consequence is process termination under AddressSanitizer.

CVSS severity9.8
Critical
EPSS probability2.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in libzip 1.2.0 allows attackers to crash a consuming application that opens a malformed ZIP archive. An error path in _zip_dirent_read frees its temporary archive buffer, then later cleanup calls _zip_buffer_free on the same allocation and reads released heap memory. Reaching the flaw requires an application to open the crafted archive; the demonstrated consequence is process termination under AddressSanitizer.

The record

CVE
CVE-2019-17582
Published
Feb 9, 2021
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1203
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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