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Fedora 45 mingw-python3 Critical File Write Flaw Vuln 2026

Linuxsecurity •LinuxSecurity Advisories • September 27, 2026

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MinGW Windows python3

Update to python-3.11.16.

* Fri Sep 18 2026 Sandro Mani - 3.11.16-1 - Update to 3.11.16

[ 1 ] Bug #2525128 - CVE-2026-7774 mingw-python3: Python tarfile: Arbitrary file write via crafted link entries [fedora-all]

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-19a92359f8' at the command line. For more information, refer to the dnf documentation available at

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Flaw in Fedora MinGW Python3 Exploited CISA has confirmed the exploitation of a critical flaw (CVE-2026-7774) affecting Fedora's MinGW Python3 package. This vulnerability allows arbitrary file writes via crafted link entries, posing a significant risk to users. The flaw was published on June 4, 2026, and affects multiple Fedora releases, including versions 43, 44, and 45. Users are urged to update to Python 3.11.16 to mitigate the risk. The updates were made available on September 18, 2026. The flaw has been confirmed to be actively exploited, necessitating immediate action from system administrators. The vulnerability impacts systems using the MinGW Python3 package on Linux. Administrators should check their systems for the affected versions and apply the necessary updates. 3 sources 73

Extracted Entities

Fedora 45 mingw-python3 Critical File Write Flaw Vuln 2026

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Extracted Entities

Attack Types (1)

CVEs (1)

Platforms (2)