Is CVE-2025-13837 in the CISA KEV catalog?

No. CVE-2025-13837 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-13837?

CVE-2025-13837 has a CVSS v3 base score of 5.5 (Low).

What is the EPSS score for CVE-2025-13837?

CVE-2025-13837 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13837?

Upgrade pypy3 on debian unstable to 7.3.21+dfsg-1 or later. Fixes are available for 73 affected products.

CVE & CISA-KEV Catalog

CVE-2025-13837

LOW

5.5

CVSS v3

NVD

Description

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues

CWE-400Resource Exhaustion

How to fix

Remediation Available

pypy3Debian

Fixed in:7.3.21+dfsg-1CVE-2025-13837

python-unversioned-commandRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python-unversioned-commandRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3Red Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:11-main@srcRHSA-2026:8822

Fixed in:11-main@aarch64RHSA-2026:8822

Fixed in:12-main@x86_64RHSA-2026:8824

Fixed in:12-main@srcRHSA-2026:8824

Fixed in:12-main@aarch64RHSA-2026:8824

Fixed in:11-main@x86_64RHSA-2026:8822

python3Rocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:11-main@srcRHSA-2026:8822

Fixed in:12-main@x86_64RHSA-2026:8824

Fixed in:11-main@x86_64RHSA-2026:8822

Fixed in:12-main@aarch64RHSA-2026:8824

Fixed in:11-main@aarch64RHSA-2026:8822

Fixed in:12-main@srcRHSA-2026:8824

python3-debugRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-debugRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-develRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-develRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-idleRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-idleRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-libsRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-libsRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-testRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-testRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-tkinterRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-tkinterRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3.12Red Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12Rocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debuginfoRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debuginfoRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugsourceRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugsourceRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-develRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-develRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-idleRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-idleRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-libsRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-libsRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-rpm-macrosRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

python3.12-rpm-macrosRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

python3.12-testRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-testRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-tkinterRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-tkinterRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

registry.redhat.io/rhui5/cdsRed Hat / RHEL

Fixed in:rhel9@sha256:29229a9b1908d9586aa60ae96ea4cab29316c058665ea4e10bd7d88e3434f38a_amd64RHSA-2026:21275

registry.redhat.io/rhui5/cdsRocky

Fixed in:rhel9@sha256:29229a9b1908d9586aa60ae96ea4cab29316c058665ea4e10bd7d88e3434f38a_amd64RHSA-2026:21275

registry.redhat.io/rhui5/haproxyRed Hat / RHEL

Fixed in:rhel9@sha256:eeceb83a297bdb2778a63fa0e55d441ba316b77be786280746348fdcdeae866d_amd64RHSA-2026:21275

registry.redhat.io/rhui5/haproxyRocky

Fixed in:rhel9@sha256:eeceb83a297bdb2778a63fa0e55d441ba316b77be786280746348fdcdeae866d_amd64RHSA-2026:21275

registry.redhat.io/rhui5/installerRocky

Fixed in:rhel9@sha256:fb8d5c681efa515095f164334fde48bb2c4160069ba7512ddbf16a865c65ae17_amd64RHSA-2026:21275

registry.redhat.io/rhui5/installerRed Hat / RHEL

Fixed in:rhel9@sha256:fb8d5c681efa515095f164334fde48bb2c4160069ba7512ddbf16a865c65ae17_amd64RHSA-2026:21275

registry.redhat.io/rhui5/rhuaRocky

Fixed in:rhel9@sha256:ae3724c290b6e0c536cadae4dbe38fc1241fb88520db381e04bfbd1e489989e8_amd64RHSA-2026:21275

registry.redhat.io/rhui5/rhuaRed Hat / RHEL

Fixed in:rhel9@sha256:ae3724c290b6e0c536cadae4dbe38fc1241fb88520db381e04bfbd1e489989e8_amd64RHSA-2026:21275

libpython3.10Ubuntu

Fixed in:3.10.12-1~22.04.14USN-8018-1

libpython3.11Ubuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm8USN-8018-1

libpython3.12t64Ubuntu

Fixed in:3.12.3-1ubuntu0.11USN-8018-1

libpython3.13Ubuntu

Fixed in:3.13.7-1ubuntu0.3USN-8018-1

libpython3.14Ubuntu

Fixed in:3.14.0-1ubuntu0.2USN-8018-1

libpython3.4Ubuntu

Fixed in:3.4.3-1ubuntu1~14.04.7+esm19USN-8018-1

libpython3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm9USN-8018-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm21USN-8018-1

libpython3.6Ubuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm8USN-8018-1

libpython3.7Ubuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm9USN-8018-1

libpython3.8Ubuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm9USN-8018-1

Fixed in:3.8.10-0ubuntu1~20.04.18+esm5USN-8018-1

libpython3.9Ubuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm9USN-8018-1

python3.10Ubuntu

Fixed in:3.10.12-1~22.04.14USN-8018-1

python3.11Ubuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm8USN-8018-1

python3.12Ubuntu

Fixed in:3.12.3-1ubuntu0.11USN-8018-1

python3.13Ubuntu

Fixed in:3.13.7-1ubuntu0.3USN-8018-1

python3.14Ubuntu

Fixed in:3.14.0-1ubuntu0.2USN-8018-1

python3.4Ubuntu

Fixed in:3.4.3-1ubuntu1~14.04.7+esm19USN-8018-1

python3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm9USN-8018-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm21USN-8018-1

python3.6Ubuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm8USN-8018-1

python3.7Ubuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm9USN-8018-1

python3.8Ubuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm9USN-8018-1

Fixed in:3.8.10-0ubuntu1~20.04.18+esm5USN-8018-1

python3.9Ubuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm9USN-8018-1

Python 2Windows application

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Python 3.10Windows application

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

Python 3.11Windows application

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

Python 3.12Windows application

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Python 3.8Windows application

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

Python 3.9Windows application

Affected:3.13.10Fixed in:3.13.10Python Software Foundation

Affected:3.14.0 3.14.1Fixed in:3.14.1Python Software Foundation

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Patch6

Vendor Advisory1

mail.python.org

Other references2

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	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 2026-03-03.