CVE•Published 2018-06-12•Modified 2026-10-08•1 article on news•5 live references•NVD data
CVE-2018-0732Openssl · Openssl
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
99
Exploit Prediction Scoring System · top 1% of all CVEs
Weaknesses (CWE)
Description
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
Timeline
Published 2018-06-12
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 tag457,103 hosts
vuln:CVE-2018-0732Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Openssl Openssl"All exposed Openssl Openssl instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Openssl"HTTP body or banner mentions "Openssl" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2018-0732Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2018-0732Censys host search filtered to this CVE id.
grep.app
CVE-2018-0732Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2018-0732GitHub code search for direct mentions.
Google dork
"CVE-2018-0732" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.