Is CVE-2024-0397 in the CISA KEV catalog?

No. CVE-2024-0397 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-0397?

CVE-2024-0397 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2024-0397?

CVE-2024-0397 has an EPSS score of 0.80% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-0397?

Upgrade pypy3 on debian 13 to 7.3.16+dfsg-1 or later. Fixes are available for 63 affected products.

CVE & CISA-KEV Catalog

CVE-2024-0397

HIGH

7.4

CVSS v3

NVD

Description

A defect was discovered in the Python “ssl” module where there is a memory race condition with the ssl.SSLContext methods “cert_store_stats()” and “get_ca_certs()”. The race condition can be triggered if the methods are called at the same time as certificates are loaded into the SSLContext, such as during the TLS handshake with a certificate directory configured. This issue is fixed in CPython 3.10.14, 3.11.9, 3.12.3, and 3.13.0a5.

CWE-362Race Condition

How to fix

Remediation Available

pypy3Debian

Fixed in:7.3.16+dfsg-1CVE-2024-0397

python-unversioned-commandRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python-unversioned-commandRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3Rocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3Red Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-debugRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-debugRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-develRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-develRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-idleRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-idleRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-libsRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-libsRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-testRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-testRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-tkinterRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3-tkinterRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.11Red Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11Rocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debugRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debugRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debuginfoRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debuginfoRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debugsourceRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-debugsourceRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-develRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-develRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-idleRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-idleRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-libsRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-libsRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-testRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-testRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-tkinterRocky

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.11-tkinterRed Hat / RHEL

Fixed in:0:3.11.9-7.el9RHSA-2024:9192

python3.12Rocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12Red Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debugRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debugRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debuginfoRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debuginfoRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debugsourceRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-debugsourceRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-develRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-develRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-idleRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-idleRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-libsRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-libsRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-testRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-testRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-tkinterRocky

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.12-tkinterRed Hat / RHEL

Fixed in:0:3.12.5-2.el9RHSA-2024:9190

python3.9Red Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.9Rocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.9-debuginfoRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.9-debuginfoRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.9-debugsourceRed Hat / RHEL

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.9-debugsourceRocky

Fixed in:0:3.9.21-1.el9_5RHSA-2024:10983

python3.10Ubuntu

Fixed in:3.10.12-1~22.04.5USN-6928-1

python3.10-minimalUbuntu

Fixed in:3.10.12-1~22.04.5USN-6928-1

python3.8Ubuntu

Fixed in:3.8.10-0ubuntu1~20.04.11USN-6928-1

python3.8-minimalUbuntu

Fixed in:3.8.10-0ubuntu1~20.04.11USN-6928-1

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.80%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Other references12

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

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Markdown

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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 2025-11-03.