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CVE-2021-31566

HIGH · CVSS 7.8 · Modified

Published: 2022-08-23 · Updated: 2026-11-02 · Source: NVD

Stored catalog record

Source record retrieved 2026-11-02T19:30:19.994965+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

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Vulnerability overview

An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.

Patch review priority

Assess exposure and vendor guidance

  • No higher-priority signal is available in the current stored evidence.
  • Fresh EPSS data is unavailable; missing values are not zero.

EPSS unavailable; no zero score is assumed.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
7.8 · HIGH
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-59

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Not listed in the CISA catalog retrieved for this record. This does not establish that exploitation has not occurred.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

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

    Before (exclusive): 3.5.2

  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*

  • cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*

  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

  • cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*

    From (inclusive): 8.2.0

    Before (exclusive): 8.2.12

  • cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*

    From (inclusive): 9.0.0

    Before (exclusive): 9.0.6

  • cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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