---
id: CVE-2026-87734
title: An issue was discovered in the utcp package before 0.0.6 for OCaml
summary: >-
  An issue was discovered in the utcp package before 0.0.6 for OCaml.
  Out-of-order segment reassembly allows remote denial of service.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-923
vendor: OCaml
product: utcp
affected:
  - utcp < 0.0.6
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-14T12:57:00.647529Z'
exploitAvailable: true
published: '2026-09-09'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T12:57:32.352Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-87734'
references:
  - url: 'https://osv.dev/vulnerability/OSEC-2026-11'
tags:
  - cve.org
  - exploit-available
epss: 0.0029
epssPercentile: 0.218
ingestedAt: '2026-09-14T15:23:07.429Z'
---

## Overview

An issue was discovered in the utcp package before 0.0.6 for OCaml. Out-of-order segment reassembly allows remote denial of service.

## Affected

- `utcp < 0.0.6`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.