CVE-2021-34141

Name: CVE-2021-34141
Creator: NVD / NIST
Published: 2021-12-17T19:15:07.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.56%

Last modified Jun 17, 2026

CVE-2021-34141 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An incomplete string comparison in the numpy.core component in NumPy before 1.22.0 allows attackers to trigger slightly incorrect copying by constructing specific string objects. NOTE: the vendor states that this reported code behavior is "completely harmless.". EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

An incomplete string comparison in the numpy.core component in NumPy before 1.22.0 allows attackers to trigger slightly incorrect copying by constructing specific string objects. NOTE: the vendor states that this reported code behavior is "completely harmless."

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.56%

72.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-697

Affected Software

Vendor	Product	Versions
Numpy	Numpy	< 1.22.0
Oracle	Communications Cloud Native Core Policy	22.1.3

References

https://github.com/numpy/numpy/issues/18993Exploit, Issue Tracking, Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
https://github.com/numpy/numpy/issues/18993Exploit, Issue Tracking, Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory

Timeline

Published: Dec 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34141?

How severe is CVE-2021-34141?

CVE-2021-34141 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34141?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34141?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST