CVE•Published 2022-11-22•Modified 2026-10-08•1 article on news•6 live references•NVD data
CVE-2022-36227Libarchive · Libarchive
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
84
Exploit Prediction Scoring System · top 16% of all CVEs
Weaknesses (CWE)
Description
In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites this CWE-476 remark but third parties dispute the code-execution impact: "In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution."
Timeline
Published 2022-11-22
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 tag0 hosts
vuln:CVE-2022-36227Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Libarchive Libarchive"All exposed Libarchive Libarchive instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Libarchive"HTTP body or banner mentions "Libarchive" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2022-36227Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2022-36227Censys host search filtered to this CVE id.
grep.app
CVE-2022-36227Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2022-36227GitHub code search for direct mentions.
Google dork
"CVE-2022-36227" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.