CVE catalog

CVE-2025-6170

libxml2 vulnerabilities

A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.

Severity: Medium · CVSS 4.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Published: Jun 15, 2025, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.32% · Oct 27, 2026

Projects and upstream resources

[libxml2][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

{
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    {
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      "status": "fixed",
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      "version": "2.15.4+dfsg-1"
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      "version": "2.15.4+dfsg-1"
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    },
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    },
    {
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      "status": "fixed",
      "release": "bookworm",
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    },
    {
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      "status": "fixed",
      "release": "bookworm-security",
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    }
  ],
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    {
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    },
    {
      "bug": 1107938,
      "name": "libxml2",
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    },
    {
      "bug": 1107938,
      "name": "libxml2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
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    }
  ],
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    {
      "name": "enterprise_linux",
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      "provider_record_id": "NVD-CVE-2025-6170"
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      "release": "3.21",
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      "release": "3.23",
      "versions": [],
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      "fixed_version": "2.13.9-r0",
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    {
      "name": "libxml2",
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      "ranges": [
        {
          "type": "ECOSYSTEM",
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      "release": "3.24",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "2.13.9-r0",
      "provider_record_id": "ALPINE-CVE-2025-6170"
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      "name": "libxml2",
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      "ranges": [
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        "2.9.4+dfsg1-8ubuntu3",
        "2.9.10+dfsg-1ubuntu3",
        "2.9.10+dfsg-4build1",
        "2.9.10+dfsg-5",
        "2.9.10+dfsg-5ubuntu0.20.04.1",
        "2.9.10+dfsg-5ubuntu0.20.04.2",
        "2.9.10+dfsg-5ubuntu0.20.04.3",
        "2.9.10+dfsg-5ubuntu0.20.04.4",
        "2.9.10+dfsg-5ubuntu0.20.04.5",
        "2.9.10+dfsg-5ubuntu0.20.04.6",
        "2.9.10+dfsg-5ubuntu0.20.04.7",
        "2.9.10+dfsg-5ubuntu0.20.04.8",
        "2.9.10+dfsg-5ubuntu0.20.04.9",
        "2.9.10+dfsg-5ubuntu0.20.04.10"
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    {
      "name": "libxml2",
      "distro": "ubuntu",
      "ranges": [
        {
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        "2.9.12+dfsg-5",
        "2.9.12+dfsg-6",
        "2.9.13+dfsg-1",
        "2.9.13+dfsg-1build1",
        "2.9.13+dfsg-1ubuntu0.1",
        "2.9.13+dfsg-1ubuntu0.2",
        "2.9.13+dfsg-1ubuntu0.3",
        "2.9.13+dfsg-1ubuntu0.4",
        "2.9.13+dfsg-1ubuntu0.5",
        "2.9.13+dfsg-1ubuntu0.6",
        "2.9.13+dfsg-1ubuntu0.7"
      ],
      "ecosystem": "deb",
      "fixed_version": "2.9.13+dfsg-1ubuntu0.8",
      "provider_record_id": "UBUNTU-CVE-2025-6170"
    },
    {
      "name": "libxml2",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
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            {
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          ]
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        "2.9.14+dfsg-1.3build2",
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        "2.9.14+dfsg-1.3ubuntu1",
        "2.9.14+dfsg-1.3ubuntu2",
        "2.9.14+dfsg-1.3ubuntu3",
        "2.9.14+dfsg-1.3ubuntu3.1",
        "2.9.14+dfsg-1.3ubuntu3.2",
        "2.9.14+dfsg-1.3ubuntu3.3"
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      "ecosystem": "deb",
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      "provider_record_id": "UBUNTU-CVE-2025-6170"
    }
  ]
}

[Debian bug #1107938]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libxml2]Unknown
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
[libxml2-dev]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
[libxml2-doc]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
[libxml2-utils]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
[python3-libxml2]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.14+dfsg-1.3~deb12u3
  usn · libxml2 · debian · bookworm

Observed: Oct 27, 2026, 1:44:31 PM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]