CVE-2021-24032Beginning 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…
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No exploitation reported and no EPSS estimate yet.
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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
- 4.7 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-277
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Facebook Zstandard facebook:zstandard (from the name) | from 1.4.9 before unspecified not affected; from 1.4.1 before unspecified; from unspecified before 1.4.1 not affected | CNA record |
facebook zstandard facebook:zstandard | from 1.4.1 before 1.4.9 | NVD |
References
- https://github.com/facebook/zstd/issues/2491x-refsource-misc
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519x-refsource-misc
- https://www.facebook.com/security/advisories/cve-2021-24032x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.