VDB
DEBIAN-CVE-2026-28364
DEBIAN-CVE-2026-28364
PUBLISHED
CVSS 7.800000190734863 HIGH
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.
Risk Scores
CVSS v3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | ocaml | 5.3.0-2, 5.3.0-1, 5.3.0-1 |
| Debian | ocaml | |
| Debian:14 | ocaml | 5.4.0-1, 5.4.0-1~exp2, 5.4.0-1~exp3 |
| Debian:11 | ocaml | 5.4.0-1, 4.11.1-5, 4.13.1-2 |
| Debian:13 | ocaml | 5.4.1-1, 5.4.0-3, 5.4.0-2 |
Timeline
- Feb 27, 2026 CVE Published
- Apr 28, 2026 CVE Updated