---
title: "CVE-2020-7925\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2020-7925?format=md
keywords: index, follow
---

# CVE-2020-7925

Publication date 23 November 2020

Last updated 18 February 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2020-7925?format=md#impact-score)

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## Description

Incorrect validation of user input in the role name parser may lead to use
of uninitialized memory allowing an unauthenticated attacker to use a
specially crafted request to cause a denial of service. This issue affects
MongoDB Server v4.4 versions prior to 4.4.0-rc12; MongoDB Server v4.2
versions prior to 4.2.9.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2020-7925?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mongodb | 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.10 kinetic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2020-7925?format=md#patch-details)

## Notes

---

### [john-breton](https://launchpad.net/~john-breton)

This is a trivial patch that is fair use to apply in
Ubuntu. Fortunately it does not need to be applied in
any of our releases because the code path could only
be triggered in versions 4.2 and 4.4 of mongodb.
Earlier versions contain the problematic code but it
cannot ever be triggered unless other code surrounding it
is also changed.

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| mongodb | * Upstream:   [9fff0f0](https://github.com/mongodb/mongo/commit/9fff0f04f5b3e37502741c6f1c6674b1a5c10767) * Upstream:   [feb5048](https://github.com/mongodb/mongo/commit/feb50487c23cf6e61843ac6a0ed9ce0a92cd6f71) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7925)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-7925)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-7925)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-7925)

### Other references

* <https://jira.mongodb.org/browse/SERVER-49142>
* <https://www.cve.org/CVERecord?id=CVE-2020-7925>