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CVE-2025-5918Libarchive: reading past eof may be triggered for piped file streams

Description

A vulnerability has been identified in the libarchive library. This flaw can be triggered when file streams are piped into bsdtar, potentially allowing for reading past the end of the file. This out-of-bounds read can lead to unintended consequences, including unpredictable program behavior, memory corruption, or a denial-of-service condition.

Timeline

  1. ID reserved

    By redhat

  2. Published

  3. · 17 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-5918, by who scored it
Scored byCVSSScoreVector
redhatCNA (assigner)3.1Low3.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
NVDNVD · Analyzed3.1Medium6.6CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
EPSS (exploitation in 30 days)
0.39% · top 66% of all CVEs (15 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.9.

Affected products

What to do

Workaround: Upgrade to libarchive version 3.8.0 or later, which includes important security fixes and stability improvements.

References

References4

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .