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Vulnerabilities CVE-2026-28364

CVE-2026-28364

High
Open
TLP:CLEAR

AI Analysis

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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.

Details

CVSS Score
7.9
EPSS Score
0.21%

11.4th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Confidence
90%
Published
Feb 27, 2026
Last Modified
Jul 15, 2026
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