CVE•Published 2021-03-04•Modified 2026-10-08•0 articles on news•6 live references•NVD data
CVE-2021-24032Facebook · Zstandard
Vulnerability data via NVD (ingested)
CVSS v3.1
4.7
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS percentile
26
Exploit Prediction Scoring System · top 74% of all CVEs
Description
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.
Timeline
Published 2021-03-04
Modified 2026-10-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2021-24032Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Facebook Zstandard"All exposed Facebook Zstandard instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Zstandard"HTTP body or banner mentions "Zstandard" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-24032Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-24032Censys host search filtered to this CVE id.
grep.app
CVE-2021-24032Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-24032GitHub code search for direct mentions.
Google dork
"CVE-2021-24032" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2021-24032 on GitHub.
We haven't classified any articles referencing CVE-2021-24032 yet. The external references above still apply.