CVE•Published 2019-05-28•Modified 2026-10-14•1 article on news•6 live references•NVD data
CVE-2019-5436Haxx · Libcurl
Vulnerability data via NVD (ingested)
CVSS v3.1
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
99
Exploit Prediction Scoring System · top 1% of all CVEs
Weaknesses (CWE)
Description
A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.
Timeline
Published 2019-05-28
Modified 2026-10-14
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-2019-5436Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Haxx Libcurl"All exposed Haxx Libcurl instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Libcurl"HTTP body or banner mentions "Libcurl" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2019-5436Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2019-5436Censys host search filtered to this CVE id.
grep.app
CVE-2019-5436Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2019-5436GitHub code search for direct mentions.
Google dork
"CVE-2019-5436" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.