CVE•Published 2022-10-24•Modified 2026-10-14•1 article on news•6 live references•NVD data
CVE-2021-46848Gnu · Libtasn1
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS percentile
82
Exploit Prediction Scoring System · top 18% of all CVEs
Weaknesses (CWE)
Description
GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.
Timeline
Published 2022-10-24
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-2021-46848Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Gnu Libtasn1"All exposed Gnu Libtasn1 instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Libtasn1"HTTP body or banner mentions "Libtasn1" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-46848Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-46848Censys host search filtered to this CVE id.
grep.app
CVE-2021-46848Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-46848GitHub code search for direct mentions.
Google dork
"CVE-2021-46848" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.