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CVE-2026-45253 is a FreeBSD kernel vulnerability in ptrace(PT_SC_REMOTE) caused by improper validation of parameters associated with the syscall(2) and __syscall(2) meta-system calls. The flaw skips a bounds check on the redirected syscall number, which permits out-of-bounds indexing into the kernel sysent table. A local attacker able to debug a process can leverage this condition to achieve arbitrary code execution in kernel context, even when the traced target process itself has no special privileges.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A FreeBSD vulnerability in the public advisory record; the content states it was independently found by Calif using OpenAI Codex, but does not describe the flaw type beyond inclusion in the FreeBSD advisory cluster.
A FreeBSD vulnerability covered by one of three advisories; the content indicates it was validated with a proof-of-concept local privilege-escalation exploit and independently confirmed by FreeBSD advisories.
A local privilege escalation vulnerability in FreeBSD ptrace handling where PT_SC_REMOTE skips a bounds check, enabling out-of-bounds sysent table indexing that can be chained into privilege escalation.
A local privilege escalation vulnerability in FreeBSD ptrace handling where PT_SC_REMOTE skips a bounds check, enabling out-of-bounds sysent table indexing.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.