CVE-2025-58183

Name: CVE-2025-58183
Creator: NVD / NIST
Published: 2025-10-29T23:16:19.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2025-58183 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input can result in large allocations.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

References

Timeline

Published: Oct 29, 2025
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2025-58183?

How severe is CVE-2025-58183?

CVE-2025-58183 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2025-58183?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-58183?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST