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CVE PROGRAM SOURCE RECORD7.9 High

CVE-2026-28364

In OCaml before 4.14.3 and 5.x before 5.4.1, a buffer over-read in Marshal deserialization (runtime/intern.c) enables remote code execution through a multi-phase attack chain. The

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Status
Published
Published
Updated
Assigning organization
mitre

Description

In OCaml before 4.14.3 and 5.x before 5.4.1, a buffer over-read in Marshal deserialization (runtime/intern.c) enables remote code execution through a multi-phase attack chain. The vulnerability stems from missing bounds validation in the readblock() function, which performs unbounded memcpy() operations using attacker-controlled lengths from crafted Marshal data.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OCaml OCaml

Default version status: unaffected

  • 0 to < 4.14.3affected
  • 5.0.0 to < 5.4.1affected
pkg:opam/ocaml

References