CVE•Published 2020-06-22•Modified 2026-06-22•1 article on news•6 live references•NVD data
CVE-2020-14967Kjur · Jsrsasign
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
83
Exploit Prediction Scoring System · top 17% of all CVEs
Description
An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. Its RSA PKCS1 v1.5 decryption implementation does not detect ciphertext modification by prepending '\0' bytes to ciphertexts (it decrypts modified ciphertexts without error). An attacker might prepend these bytes with the goal of triggering memory corruption issues.
Timeline
Published 2020-06-22
Modified 2026-06-22
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-2020-14967Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Kjur Jsrsasign"All exposed Kjur Jsrsasign instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Jsrsasign"HTTP body or banner mentions "Jsrsasign" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2020-14967Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-14967Censys host search filtered to this CVE id.
grep.app
CVE-2020-14967Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-14967GitHub code search for direct mentions.
Google dork
"CVE-2020-14967" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.