---
id: CVE-2026-73282
title: >-
  In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if
  a certain pair of remote-forwarding operations are concurrent.
summary: >-
  In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if
  a certain pair of remote-forwarding operations are concurrent.
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-416
  - CWE-825
vendor: openbsd
product: openssh
affected:
  - openssh < 10.5
patched:
  - openssh 10.5
published: '2026-08-11'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73282'
references:
  - url: 'https://www.openssh.org/releasenotes.html#10.5'
    label: cve@mitre.org
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73282.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-73282'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2514328'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-73282'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73282'
  - url: 'https://access.redhat.com/errata/RHSA-2026:69129'
  - url: 'https://access.redhat.com/errata/RHSA-2026:69266'
  - url: 'https://access.redhat.com/errata/RHSA-2026:69130'
  - url: 'https://access.redhat.com/errata/RHSA-2026:70719'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00163
epssPercentile: 0.059
ingestedAt: '2026-09-05T15:41:16.727Z'
scores:
  nvd: 4.8
  vendor: 5.6
---

## Overview

In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.

## Affected

- `openssh < 10.5`

## Remediation

Upgrade past the affected range:

- `openssh 10.5`

## Vendor advisories

- **RHSA-2026:69129** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69129)
- **RHSA-2026:69266** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69266)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 4 · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73282.json)
- **RHSA-2026:69130** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69130)
- **RHSA-2026:70719** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:70719)