---
id: CVE-2017-7376
title: >-
  Buffer overflow in libxml2 allows remote attackers to execute arbitrary code
  by leveraging an incorrect limit for port values when handling redirects.
summary: >-
  Buffer overflow in libxml2 allows remote attackers to execute arbitrary code
  by leveraging an incorrect limit for port values when handling redirects.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
vendor: xmlsoft
product: libxml2
affected:
  - libxml2 < 2.9.5
  - android = 4.4.4
  - android = 5.0.2
  - android = 5.1.1
  - android = 6.0
  - android = 6.0.1
  - android = 7.0
  - android = 7.1.1
  - android = 7.1.2
  - debian_linux = 8.0
  - debian_linux = 9.0
patched:
  - libxml2 2.9.5
published: '2018-02-19'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T07:16:40.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2017-7376'
references:
  - url: 'http://www.securityfocus.com/bid/98877'
    label: cve@mitre.org
  - url: 'http://www.securitytracker.com/id/1038623'
    label: cve@mitre.org
  - url: >-
      https://android.googlesource.com/platform/external/libxml2/+/51e0cb2e5ec18eaf6fb331bc573ff27b743898f4
    label: cve@mitre.org
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1462216'
    label: cve@mitre.org
  - url: >-
      https://git.gnome.org/browse/libxml2/commit/?id=5dca9eea1bd4263bfa4d037ab2443de1cd730f7e
    label: cve@mitre.org
  - url: 'https://source.android.com/security/bulletin/2017-06-01'
    label: cve@mitre.org
  - url: 'https://www.debian.org/security/2017/dsa-3952'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/98877'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://www.securitytracker.com/id/1038623'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://android.googlesource.com/platform/external/libxml2/+/51e0cb2e5ec18eaf6fb331bc573ff27b743898f4
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1462216'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.gnome.org/browse/libxml2/commit/?id=5dca9eea1bd4263bfa4d037ab2443de1cd730f7e
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://source.android.com/security/bulletin/2017-06-01'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2017/dsa-3952'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - exploit-available
epss: 0.23286
epssPercentile: 0.97739
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/brahmstaedt/libxml2-exploit'
  checkedAt: '2026-10-14T07:21:40.621Z'
exploitAvailable: true
ingestedAt: '2026-10-14T07:21:04.799Z'
---

## Overview

Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling redirects.

## Affected

- `libxml2 < 2.9.5`
- `android = 4.4.4`
- `android = 5.0.2`
- `android = 5.1.1`
- `android = 6.0`
- `android = 6.0.1`
- `android = 7.0`
- `android = 7.1.1`
- `android = 7.1.2`
- `debian_linux = 8.0`
- `debian_linux = 9.0`

## Remediation

Upgrade past the affected range:

- `libxml2 2.9.5`