CVE catalog

CVE-2026-75421

aria2 <=1.37.0 has a stack-buffer-underflow…

[CVE catalog]

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

Severity: Medium · CVSS 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Published: Aug 25, 2026, 12:00:00 AM UTC
Updated: Aug 25, 2026, 9:17:45 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.16% · Oct 27, 2026

Projects and upstream resources

[aria2][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "aria2",
      "status": "vulnerable",
      "release": "sid",
      "version": "1.37.0+debian-4"
    },
    {
      "name": "aria2",
      "status": "vulnerable",
      "release": "forky",
      "version": "1.37.0+debian-4"
    },
    {
      "name": "aria2",
      "status": "vulnerable",
      "release": "trixie",
      "version": "1.37.0+debian-3"
    },
    {
      "name": "aria2",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "1.36.0-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "aria2",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "aria2",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "aria2",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "aria2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "aria2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.37.0-bp160.2.1"
            }
          ]
        }
      ],
      "release": "leap 16.0",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "1.37.0-bp160.2.1",
      "provider_record_id": "OPENSUSE-SU-2026:21997-1"
    },
    {
      "name": "aria2",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.37.0-3.1"
            }
          ]
        }
      ],
      "release": "tumbleweed",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "1.37.0-3.1",
      "provider_record_id": "OPENSUSE-SU-2026:11843-1"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[aria2]Unknown
Details (2)
- 1.36.0-1 · amd64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12
- 1.36.0-1 · arm64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12
[libaria2-0]Unknown
Source package: [aria2]
Details (2)
- 1.36.0-1 · amd64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12
- 1.36.0-1 · arm64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12
[libaria2-0-dev]Unknown
Source package: [aria2]
Details (2)
- 1.36.0-1 · amd64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12
- 1.36.0-1 · arm64 · bookworm
  Affected
  nvd · aria2 · debian · bookworm; nvd · aria2 · debian · 12

[Debian 13 (Trixie)]

[aria2]Unknown
Details (2)
- 1.37.0+debian-3 · amd64 · trixie
  Affected
  nvd · aria2 · debian · 13
- 1.37.0+debian-3 · arm64 · trixie
  Affected
  nvd · aria2 · debian · 13
[libaria2-0]Unknown
Source package: [aria2]
Details (2)
- 1.37.0+debian-3 · amd64 · trixie
  Affected
  nvd · aria2 · debian · 13
- 1.37.0+debian-3 · arm64 · trixie
  Affected
  nvd · aria2 · debian · 13
[libaria2-0-dev]Unknown
Source package: [aria2]
Details (2)
- 1.37.0+debian-3 · amd64 · trixie
  Affected
  nvd · aria2 · debian · 13
- 1.37.0+debian-3 · arm64 · trixie
  Affected
  nvd · aria2 · debian · 13

[openSUSE Tumbleweed]

[aria2]Unknown
Source package: [aria2]
Details (1)
- 1.37.0-2.2 · x86_64 · tumbleweed
  Affected · Fixed: 1.37.0-3.1
  nvd · aria2 · opensuse · tumbleweed
[aria2-devel]Unknown
Source package: [aria2]
Details (1)
- 1.37.0-2.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.37.0-3.1
  Version impact unknown
  nvd · aria2 · opensuse · tumbleweed
[aria2-lang]Unknown
Source package: [aria2]
Details (1)
- 1.37.0-2.2 · noarch · tumbleweed
  Unknown · Fixed: 1.37.0-3.1
  Version impact unknown
  nvd · aria2 · opensuse · tumbleweed
[libaria2-0]Unknown
Source package: [aria2]
Details (1)
- 1.37.0-2.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.37.0-3.1
  Version impact unknown
  nvd · aria2 · opensuse · tumbleweed

Observed: Oct 23, 2026, 9:37:01 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]