What is CVE-2021-33430?

CVE-2021-33430 is a medium-severity vulnerability in Numpy, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2021-12-17.

How severe is CVE-2021-33430?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-33430 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Numpy

CVE-2021-33430

A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NO…

Vulnerability class: Buffer Overflow

EPSS: 0.011 (61.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Numpy
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-33430?: CVE-2021-33430 is a medium-severity vulnerability in Numpy, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2021-12-17.
How severe is CVE-2021-33430?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-33430 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.