CVE•Published 2021-11-05•Modified 2026-07-09•1 article on news•5 live references•NVD data
CVE-2021-42237Sitecore · Experience_platform
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
100
Exploit Prediction Scoring System · top 0% of all CVEs
Weaknesses (CWE)
Description
Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.
Timeline
Published 2021-11-05
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-2021-42237Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Sitecore Experience Platform" version:"7.5"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Experience Platform"HTTP body or banner mentions "Experience Platform" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-42237Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-42237Censys host search filtered to this CVE id.
grep.app
CVE-2021-42237Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-42237GitHub code search for direct mentions.
Google dork
"CVE-2021-42237" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.