# CVE-2016-4014: XML external entity in n/a

> Remote attackers can cause a system hang in SAP NetWeaver JAVA AS via a crafted DTD in an XML request to the UDDI component.

- **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Apr 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-m8r4-h573-3frq

## What is CVE-2016-4014?

CVE-2016-4014 is a high-severity vulnerability in Sap Netweaver, published on 14 Apr 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

XML external entity (XXE) vulnerability in the UDDI component in SAP NetWeaver JAVA AS 7.4 allows remote attackers to cause a denial of service (system hang) via a crafted DTD in an XML request to uddi/api/replication, aka SAP Security Note 2254389.

## Which versions are affected by CVE-2016-4014?

It affects 1 product.


Products: Sap Netweaver.

## How do I fix CVE-2016-4014?

No fix has been published for CVE-2016-4014 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-4014 being exploited?

There is no known exploitation of CVE-2016-4014 in the wild and no public exploit code.

Public exploit code:

- [CVE-2016-4014] SAP Netweaver AS JAVA UDDI Component XML External Entity (XXE) (github_poc): https://github.com/murataydemir/CVE-2016-4014

## Other vulnerabilities in Sap Netweaver

- [CVE-2025-31324](https://insights.sbomify.com/CVE-2025-31324/): SAP NetWeaver Unrestricted File Upload (critical 10.0, exploited in the wild)
- [CVE-2021-38163](https://insights.sbomify.com/CVE-2021-38163/): SAP NetWeaver Unrestricted File Upload (critical 9.9, exploited in the wild)
- [CVE-2025-42999](https://insights.sbomify.com/CVE-2025-42999/): SAP NetWeaver Deserialization (critical 9.1, exploited in the wild)
- [CVE-2013-6822](https://insights.sbomify.com/CVE-2013-6822/): XML external entity in n/a (critical 10.0)
- [CVE-2011-1517](https://insights.sbomify.com/CVE-2011-1517/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-4014 and fix it if it is affected.

What it is: CVE-2016-4014 is a high-severity vulnerability in Sap Netweaver, published on 14 Apr 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-4014 in the wild and no public exploit code.

Affected product: Sap Netweaver. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2016-4014/ (Markdown: https://insights.sbomify.com/CVE-2016-4014/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-4014
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-4014
- OSV: https://osv.dev/vulnerability/CVE-2016-4014

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-4014/
Summaries are generated and may contain mistakes; the official description above is the record.