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CVE-2019-20924

22
FAUCET Score

CVE-2019-20924 is a denial-of-service vulnerability affecting MongoDB Server versions prior to 4.2.2. An authenticated user with database query privileges can trigger a denial of service by submitting specially crafted queries that exploit an invariant in the IndexBoundsBuilder. This vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and the potential for high availability impact, with no impact on confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.2.0, < 4.2.2CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.28%
Probability of exploitation in next 30 days
EPSS Percentile
67.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0128 is in the 81st percentile among its peer group of 21,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2019-20924Moderate

mongodb: Denial of service via crafted queries which trigger an invariant in the IndexBoundsBuilder

Nov 23, 2020

References

jira.mongodb.org / browse/SERVER-44377
Issue TrackingVendor Advisory