Is CVE-2026-4147 in the CISA KEV catalog?

No. CVE-2026-4147 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-4147?

CVE-2026-4147 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-4147?

CVE-2026-4147 has an EPSS score of 0.21% (12th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4147?

Upgrade MongoDB to 7.0.31 or later.

CVE & CISA-KEV Catalog

CVE-2026-4147

MEDIUM

6.5

CVSS v3

NVD

Description

An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command.

CWE-457 CWE-908

How to fix

Remediation Available

MongoDBWindows application

Affected:7.0.0 7.0.31Fixed in:7.0.31MongoDB Inc.

Affected:8.0.0 8.0.20Fixed in:8.0.20MongoDB Inc.

Affected:8.2.0 8.2.6Fixed in:8.2.6MongoDB Inc.

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.21%probability of exploitation in 30 days

12thpercentile

Low risk: more likely to be exploited than 12% of all known CVEs.

References

Patch1

jira.mongodb.org

Related Vulnerabilities

Other CWE-457 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2009-0901	High	8.8	42%	-	-
CVE-2021-40418	Critical	9.8	18%	-	-
CVE-2019-11038	Medium	5.3	4.3%	-	Fix
CVE-2021-31435	High	7.8	2.8%	-	-
CVE-2021-46570	High	7.8	2.0%	-	Fix

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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 2026-04-10.