CVE•Published 2021-02-15•1 article on news•6 live references•NVD data
CVE-2021-3239
Vulnerability data via CVEDB (Shodan)
CVSS v3.1
9.8
CRITICAL
EPSS percentile
97
Exploit Prediction Scoring System · top 3% of all CVEs
Description
E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows remote attackers to execute arbitrary code on the hosting web server and gain a reverse shell.
Timeline
Published 2021-02-15
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-2021-3239Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"E-learning System Project E-learning System" version:"1.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"E-learning System"HTTP body or banner mentions "E-learning System" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-3239Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-3239Censys host search filtered to this CVE id.
grep.app
CVE-2021-3239Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-3239GitHub code search for direct mentions.
Google dork
"CVE-2021-3239" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.