# CVE-2019-19646: Null dereference in n/a

> A flaw in SQLite's integrity check allows attackers to cause a denial of service via mishandled NOT NULL constraints in generated columns.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Dec 2019
- **Updated:** 14 Oct 2026
- **Also known as:** AZL-38566, GHSA-g624-89xp-hmx8

## What is CVE-2019-19646?

CVE-2019-19646 is a critical vulnerability in Netapp Cloud Backup, published on 9 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

pragma.c in SQLite through 3.30.1 mishandles NOT NULL in an integrity_check PRAGMA command in certain cases of generated columns.

Weakness: CWE-754 (Improper Check for Unusual or Exceptional Conditions)

## Which versions are affected by CVE-2019-19646?

It affects 6 products.


Products: Netapp Cloud Backup, Netapp Ontap Select Deploy Administration Utility, Oracle Mysql Workbench, Siemens Sinec Infrastructure Network Services, Sqlite Sqlite, Tenable Tenable.sc.

## How do I fix CVE-2019-19646?

Upgrade to a fixed version.

## Is CVE-2019-19646 being exploited?

There is no known exploitation of CVE-2019-19646 in the wild and no public exploit code.

## Other vulnerabilities in Netapp Cloud Backup

- [CVE-2019-19317](https://insights.sbomify.com/CVE-2019-19317/): Denial of service in n/a (critical 9.8)
- [CVE-2019-16905](https://insights.sbomify.com/CVE-2019-16905/): Integer overflow in n/a (high 7.8)
- [CVE-2020-25692](https://insights.sbomify.com/CVE-2020-25692/): Null dereference in openldap (high 7.5)
- [CVE-2019-19645](https://insights.sbomify.com/CVE-2019-19645/): Denial of service in n/a (medium 5.5)
- [CVE-2018-15919](https://insights.sbomify.com/CVE-2018-15919/): Information disclosure in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19646 and fix it if it is affected.

What it is: CVE-2019-19646 is a critical vulnerability in Netapp Cloud Backup, published on 9 Dec 2019. 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-2019-19646 in the wild and no public exploit code.

Affected product: Netapp Cloud Backup. 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-2019-19646/ (Markdown: https://insights.sbomify.com/CVE-2019-19646/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19646
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19646
- OSV: https://osv.dev/vulnerability/CVE-2019-19646

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19646/
Summaries are generated and may contain mistakes; the official description above is the record.