CVE-2021-24032

Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.

CVSS 3.1

4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWEs

CWE-276, CWE-277

Published

2021-03-04

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• facebook:zstandard

References

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519
• https://github.com/facebook/zstd/issues/2491
• https://www.facebook.com/security/advisories/cve-2021-24032
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519
• https://github.com/facebook/zstd/issues/2491

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