CVE•Published 2026-05-21•Modified 2026-05-21•1 article on news•5 live references•NVD data
CVE-2026-45253Freebsd · Freebsd
Vulnerability data via NVD (ingested)
CVSS v3.1
8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a result, a user with the ability to debug a process may trigger arbitrary code execution in the kernel, even if the target process has no special privileges. The missing validation allows an unprivileged local user to escalate privileges, potentially gaining full control of the affected system.
Timeline
Published 2026-05-21
Modified 2026-05-21
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 tag206 hosts
vuln:CVE-2026-45253Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Freebsd"Hosts Shodan identified as running Freebsd.
More intel sources (5)
Shodan report
vuln:CVE-2026-45253Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-45253Censys host search filtered to this CVE id.
grep.app
CVE-2026-45253Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-45253GitHub code search for direct mentions.
Google dork
"CVE-2026-45253" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-45253 on GitHub.