CVE-2019-20925

HIGHEPSS 74th pctl

7.5

CVSS v3

Description

An unauthenticated client can trigger denial of service by issuing specially crafted wire protocol messages, which cause the message decompressor to incorrectly allocate memory. This issue affects MongoDB Server v4.2 versions prior to 4.2.1; MongoDB Server v4.0 versions prior to 4.0.13; MongoDB Server v3.6 versions prior to 3.6.15 and MongoDB Server v3.4 versions prior to 3.4.24.

CWE-839 CWE-697

How to fix

Remediation Available

mongodbUbuntu

Fixed in:1:3.6.3-0ubuntu1.4USN-5101-1

Fixed in:1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3USN-5101-1

mongodb-clientsUbuntu

Fixed in:1:3.6.3-0ubuntu1.4USN-5101-1

Fixed in:1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3USN-5101-1

mongodb-serverUbuntu

Fixed in:1:3.6.3-0ubuntu1.4USN-5101-1

Fixed in:1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3USN-5101-1

mongodb-server-coreUbuntu

Fixed in:1:3.6.3-0ubuntu1.4USN-5101-1

Fixed in:1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3USN-5101-1

MongoDBWindows application

Affected:4.2.0 4.2.1Fixed in:4.2.1MongoDB Inc.

Affected:4.0.0 4.0.13Fixed in:4.0.13MongoDB Inc.

Affected:3.6.0 3.6.15Fixed in:3.6.15MongoDB Inc.

Affected:3.4.0 3.4.24Fixed in:3.4.24MongoDB Inc.

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.65%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch1

jira.mongodb.org

Related Vulnerabilities

Other CWE-839 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-53176	High	9.1	0.7%	-	Fix
CVE-2023-22854	High	7.5	0.6%	-	Fix
CVE-2023-0425	High	8.6	0.5%	-	Fix
CVE-2026-56968	Low	3.7	0.3%	-	Fix
CVE-2026-48840	Medium	5.3	0.3%	-	Fix

Common questions

How do I fix CVE-2019-20925?

Published advisories record a fix for 5 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2019-20925 being actively exploited?

Not that we know of. CVE-2019-20925 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 74% of all scored CVEs.

How severe is CVE-2019-20925?

CVE-2019-20925 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2019-20925 affect?

Published advisories record a fix for mongodb (Ubuntu), mongodb-clients (Ubuntu), mongodb-server (Ubuntu), mongodb-server-core (Ubuntu), and 1 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.