CVE-2026-28364

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Summary

CVECVE-2026-28364
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-27 04:16:03 UTC
Updated2026-06-30 03:18:01 UTC
DescriptionIn 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 And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-126 | CWE-125 | CWE-126 CWE-126 Buffer Over-read | CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPCVSS7.9HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
3.1[email protected]Secondary7.9HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
3.10b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary7.9HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
3.1CNACVSS7.9HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ocaml Ocaml All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OCaml OCaml affected 4.14.3 semver Not specified
CNA OCaml OCaml affected 5.0.0 5.4.1 semver Not specified
ADP Red Hat Red Hat Enterprise Linux 10 Not specified Not specified
ADP Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
ADP Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
ADP Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
ADP Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
ADP Red Hat Red Hat Hardened Images Not specified Not specified

References

ReferenceSourceLinkTags
osv.dev/vulnerability/OSEC-2026-01 [email protected] osv.dev Third Party Advisory
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28364.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c security.access.redhat.com
bugzilla.redhat.com/show_bug.cgi 0b0ca135-0b70-47e7-9f44-1890c2a1c46c bugzilla.redhat.com
access.redhat.com/security/cve/CVE-2026-28364 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
github.com/ocaml/security-advisories/blob/generated-osv/2026/OSEC-2026-0... [email protected] github.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
ADP2026-02-27T16:01:20.960ZReported to Red Hat.
ADP2026-02-27T03:54:53.458ZMade public.
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