Vulnerability-Lookup

OESA-2026-1524 (CVE-2026-28364)

Vulnerability from osv_openeuler – Published: 2026-03-06 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

ocaml security update

Details

OCaml is a high-level, strongly-typed, functional and object-oriented programming language from the ML family of languages. This package includes runtime environment, X11 support ,Documentation generator and emacs.

Security Fix(es):

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.(CVE-2026-28364)

Severity

7.9 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-28364	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ocaml-4.14.1-6.oe2403sp1.aarch64.rpm",
          "ocaml-debuginfo-4.14.1-6.oe2403sp1.aarch64.rpm",
          "ocaml-debugsource-4.14.1-6.oe2403sp1.aarch64.rpm",
          "ocaml-devel-4.14.1-6.oe2403sp1.aarch64.rpm",
          "ocaml-help-4.14.1-6.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "ocaml-4.14.1-6.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "ocaml-4.14.1-6.oe2403sp1.x86_64.rpm",
          "ocaml-debuginfo-4.14.1-6.oe2403sp1.x86_64.rpm",
          "ocaml-debugsource-4.14.1-6.oe2403sp1.x86_64.rpm",
          "ocaml-devel-4.14.1-6.oe2403sp1.x86_64.rpm",
          "ocaml-help-4.14.1-6.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "ocaml",
        "purl": "pkg:rpm/openEuler/ocaml\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.14.1-6.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "OCaml is a high-level, strongly-typed, functional and object-oriented programming language from the ML family of languages. This package includes runtime environment, X11 support ,Documentation generator and emacs.\r\n\r\nSecurity Fix(es):\n\nIn 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.(CVE-2026-28364)",
  "id": "OESA-2026-1524",
  "modified": "2026-08-06T11:10:32Z",
  "published": "2026-03-06T11:10:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1524"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28364"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ocaml security update",
  "upstream": [
    "CVE-2026-28364"
  ]
}

CVE-2026-28364 (GCVE-0-2026-28364)

Vulnerability from cvelistv5 – Published: 2026-02-27 03:54 – Updated: 2026-07-15 01:11

Summary

Severity

7.9 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-27 15:48 UTC

CWE

CWE-126 - Buffer Over-read
CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/ocaml/security-advisories/blob…
https://osv.dev/vulnerability/OSEC-2026-01
https://access.redhat.com/security/cve/CVE-2026-28364	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2443348	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

7 products

Vendor	Product	Version
OCaml	OCaml	Affected: 0 , < 4.14.3 (semver) Affected: 5.0.0 , < 5.4.1 (semver) cpe:2.3:a:ocaml:ocaml:::::::: cpe:2.3:a:ocaml:ocaml::::::::
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Hardened Images	cpe:/a:redhat:hummingbird:1

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2026-1524 (CVE-2026-28364)

CVE-2026-28364 (GCVE-0-2026-28364)

Tags

Sightings

Nomenclature

Related by attack behaviour