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CVE-2026-34353

Quick assessment

Affected
OCaml OCaml
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ocaml是OCaml开源的一个函数式编程语言及其编译器。 ocaml 4.14.3及之前版本存在输入验证错误漏洞，该漏洞源于Bigarray.reshape存在整数溢出，可能导致读取任意内存。

CVSS 5.9 · Medium EPSS 0.11% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-34353

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
ocaml 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ocaml是OCaml开源的一个函数式编程语言及其编译器。 ocaml 4.14.3及之前版本存在输入验证错误漏洞，该漏洞源于Bigarray.reshape存在整数溢出，可能导致读取任意内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OCaml OCaml 0 ~ 4.14.3 -

II. Public POCs for CVE-2026-34353

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III. Intelligence Information for CVE-2026-34353

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Patches & Fixes for CVE-2026-34353 (1)

News Coverage for CVE-2026-34353 (1)

IV. Related Vulnerabilities

Same product: OCaml
Same vendor: OCaml
Same weakness: CWE-190

V. Comments for CVE-2026-34353

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