CVE•Published 2022-02-25•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2021-42952Zepl · Zepl
Vulnerability data via NVD (ingested)
CVSS v3.1
9.9
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
74
Exploit Prediction Scoring System · top 26% of all CVEs
Description
Zepl Notebooks before 2021-10-25 are affected by a sandbox escape vulnerability. Upon launching Remote Code Execution from the Notebook, users can then use that to subsequently escape the running context sandbox and proceed to access internal Zepl assets including cloud metadata services.
Timeline
Published 2022-02-25
Modified 2026-07-09
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-2021-42952Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Zepl Zepl"All exposed Zepl Zepl instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Zepl"HTTP body or banner mentions "Zepl" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-42952Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-42952Censys host search filtered to this CVE id.
grep.app
CVE-2021-42952Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-42952GitHub code search for direct mentions.
Google dork
"CVE-2021-42952" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2021-42952 on GitHub.