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.
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Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 27 Feb 2026 04:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| First Time appeared |
Ocaml
Ocaml ocaml |
|
| Weaknesses | CWE-126 | |
| CPEs | cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ocaml
Ocaml ocaml |
|
| References |
| |
| Metrics |
cvssV3_1
|
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-02-27T03:58:04.453Z
Reserved: 2026-02-27T03:54:53.320Z
Link: CVE-2026-28364
No data.
Status : Received
Published: 2026-02-27T04:16:03.410
Modified: 2026-02-27T04:16:03.410
Link: CVE-2026-28364
No data.
OpenCVE Enrichment
No data.
Weaknesses