# CVE-2017-9844: Deserialization in n/a

> Remote attackers can cause denial of service or execute arbitrary code via crafted serialized Java objects in SAP NetWeaver Visual Composer.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 12 Jul 2017
- **Updated:** 1 May 2025
- **Also known as:** GHSA-8xqh-j9rj-w265

## What is CVE-2017-9844?

CVE-2017-9844 is a high-severity unsafe deserialization vulnerability in Sap Netweaver, published on 12 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SAP NetWeaver 7400.12.21.30308 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted serialized Java object in a request to metadatauploader, aka SAP Security Note 2399804. NOTE: The vendor states that the devserver package of Visual Composer deserializes a malicious object that may cause legitimate users accessing a service, either by crashing or flooding the service.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2017-9844?

It affects 1 product.


Products: Sap Netweaver.

## How do I fix CVE-2017-9844?

No fix has been published for CVE-2017-9844 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-9844 being exploited?

There is no known exploitation of CVE-2017-9844 in the wild and no public exploit code.

## 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-2017-9844 and fix it if it is affected.

What it is: CVE-2017-9844 is a high-severity unsafe deserialization vulnerability in Sap Netweaver, published on 12 Jul 2017. 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-2017-9844 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-2017-9844/ (Markdown: https://insights.sbomify.com/CVE-2017-9844/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-9844
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-9844
- OSV: https://osv.dev/vulnerability/CVE-2017-9844

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-9844/
Summaries are generated and may contain mistakes; the official description above is the record.