CVE•Published 2026-08-19•Modified 2026-09-01•1 article on news•4 live references•NVD data
CVE-2026-49427Freebsd · Freebsd
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
19
Exploit Prediction Scoring System · top 81% of all CVEs
Weaknesses (CWE)
Description
Pages belonging to largepage shared memory objects were not explicitly wired. When sendfile(2) transmitted such an object with the SF_NOCACHE flag, it freed the underlying pages after transmission even though existing mappings still referred to them. An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.
Timeline
Published 2026-08-19
Modified 2026-09-01
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 tag193 hosts
vuln:CVE-2026-49427Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Freebsd"Hosts Shodan identified as running Freebsd.
More intel sources (5)
Shodan report
vuln:CVE-2026-49427Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-49427Censys host search filtered to this CVE id.
grep.app
CVE-2026-49427Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-49427GitHub code search for direct mentions.
Google dork
"CVE-2026-49427" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.