CVE•Published 2021-09-14•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2021-36582Kooboo · Kooboo_cms
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
70
Exploit Prediction Scoring System · top 30% of all CVEs
Weaknesses (CWE)
Description
In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content/Template/root/reverse-shell.aspx and can be simply triggered by browsing that URL.
Timeline
Published 2021-09-14
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-2021-36582Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Kooboo Kooboo Cms" version:"2.1.1.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Kooboo Cms"HTTP body or banner mentions "Kooboo Cms" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-36582Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-36582Censys host search filtered to this CVE id.
grep.app
CVE-2021-36582Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-36582GitHub code search for direct mentions.
Google dork
"CVE-2021-36582" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2021-36582 on GitHub.