CVE•Published 2017-07-25•Modified 2026-10-08•1 article on news•6 live references•NVD data
CVE-2017-9233Libexpat_project · Libexpat
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
95
Exploit Prediction Scoring System · top 5% of all CVEs
Weaknesses (CWE)
Description
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Timeline
Published 2017-07-25
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 tag34,501 hosts
vuln:CVE-2017-9233Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Libexpat Project Libexpat"All exposed Libexpat Project Libexpat instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Libexpat"HTTP body or banner mentions "Libexpat" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2017-9233Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2017-9233Censys host search filtered to this CVE id.
grep.app
CVE-2017-9233Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2017-9233GitHub code search for direct mentions.
Google dork
"CVE-2017-9233" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.