# CVE-2021-45985: Mitre: CVE-2021-45985 Erroneous finalizer call in Lua leads to a heap-based buffer over-read CVE-2021-45985 is fixed in 25 products on 2 platforms, first by DEBIAN-CVE-2021-45985, released April 10, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2021-45985 - Priority: High - CVSS: 7.5 (Important) - EPSS: 0.0142 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Apr 10, 2023 - Weakness: Dependency on Vulnerable Third-Party Component - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-45985 ## Description

This CVE was assigned by Mitre. Some Microsoft products consume Lau open-source software. The purpose of this document is to attest to the fact that the products listed in the Security Updates table have been updated to protect against this vulnerability.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 21H2 for 32-bit Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 10 Version 21H2 for ARM64-based Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 10 Version 21H2 for x64-based Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 10 Version 22H2 for 32-bit Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 10 Version 22H2 for ARM64-based Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 10 Version 22H2 for x64-based Systems | | [KB5044273](https://patchblox.com/security/data/fix/microsoft/kb5044273.md) | Oct 8, 2024 | | Microsoft | Windows 11 Version 22H2 for ARM64-based Systems | | [KB5044285](https://patchblox.com/security/data/fix/microsoft/kb5044285.md) | Oct 8, 2024 | | Microsoft | Windows 11 Version 22H2 for x64-based Systems | | [KB5044285](https://patchblox.com/security/data/fix/microsoft/kb5044285.md) | Oct 8, 2024 | | Microsoft | Windows 11 Version 23H2 for ARM64-based Systems | | [KB5044285](https://patchblox.com/security/data/fix/microsoft/kb5044285.md) | Oct 8, 2024 | | Microsoft | Windows 11 Version 23H2 for x64-based Systems | | [KB5044285](https://patchblox.com/security/data/fix/microsoft/kb5044285.md) | Oct 8, 2024 | | Microsoft | Windows 11 Version 24H2 for ARM64-based Systems | 26100.2894 | [KB5050009](https://patchblox.com/security/data/fix/microsoft/kb5050009.md) | Jan 14, 2025 | | Microsoft | Windows 11 Version 24H2 for x64-based Systems | 26100.2894 | [KB5050009](https://patchblox.com/security/data/fix/microsoft/kb5050009.md) | Jan 14, 2025 | | Microsoft | Windows Server 2022 | 20348.2762 | [KB5044281](https://patchblox.com/security/data/fix/microsoft/kb5044281.md) | Oct 8, 2024 | | Microsoft | Windows Server 2022 (Server Core installation) | 20348.2762 | [KB5044281](https://patchblox.com/security/data/fix/microsoft/kb5044281.md) | Oct 8, 2024 | | Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.1189 | [KB5044288](https://patchblox.com/security/data/fix/microsoft/kb5044288.md) | Oct 8, 2024 | | Microsoft | Windows Server 2025 | 26100.2894 | [KB5050009](https://patchblox.com/security/data/fix/microsoft/kb5050009.md) | Jan 14, 2025 | | Microsoft | Windows Server 2025 (Server Core installation) | 26100.2894 | [KB5050009](https://patchblox.com/security/data/fix/microsoft/kb5050009.md) | Jan 14, 2025 | | Linux | lua amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-debuginfo amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-debugsource amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-devel amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-libs amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-libs-debuginfo amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua-static amzn 2023 | 5.4.4-3.amzn2023.0.2 | [ALAS2023-2024-533](https://patchblox.com/security/data/fix/linux/alas2023-2024-533.md) | Feb 15, 2024 | | Linux | lua5.4 Debian 12.15 (bookworm) | 5.4.4-1 | [DEBIAN-CVE-2021-45985](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45985.md) | Apr 10, 2023 | | Linux | lua5.4 Debian 13.5 (trixie) | 5.4.4-1 | [DEBIAN-CVE-2021-45985](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45985.md) | Apr 10, 2023 | | Linux | lua5.4 Debian 14 | 5.4.4-1 | [DEBIAN-CVE-2021-45985](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45985.md) | Apr 10, 2023 | --- Data as of 2026-11-08T00:53:09Z UTC. 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