CVEvulnerability
CVE-2026-28364
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-02-27
- Last modified
- 2026-07-15
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.9 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.9 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
- Weaknesses
- CWE-125, CWE-126
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 configurations
• ocaml ocaml (< 4.14.3)
• ocaml ocaml (>= 5.0.0 < 5.4.1)
Related
References
- https://github.com/ocaml/security-advisories/blob/generated-osv/2026/OSEC-2026-01.json Vendor Advisory
- https://osv.dev/vulnerability/OSEC-2026-01 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-28364 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2443348 bugzilla.redhat.com
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28364.json security.access.redhat.com