---
id: CVE-2026-75421
title: >-
  aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the
  IOFile::getLine() function.
summary: >-
  aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the
  IOFile::getLine() function.
severity: medium
cvss: 4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-121
published: '2026-08-25'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:29:09.680'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75421'
references:
  - url: 'https://github.com/aria2/aria2/issues/2375'
    label: cve@mitre.org
  - url: 'https://github.com/aria2/aria2/pull/2376'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00157
epssPercentile: 0.04123
ingestedAt: '2026-09-08T20:10:03.158Z'
---

## Overview

aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.

## Remediation

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