# CVE-2021-3968: vim: vim is vulnerable to Heap-based Buffer Overflow

CVE-2021-3968 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2021-3968, released November 19, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-3968
- Priority: High
- CVSS: 8.0 (high)
- EPSS: 0.0225
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 19, 2021

## Description

vim is vulnerable to Heap-based Buffer Overflow

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | vim Debian 12.15 (bookworm) | 2:8.2.3995-1 | [DEBIAN-CVE-2021-3968](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3968.md) | Nov 19, 2021 |
| Linux | vim Debian 13.5 (trixie) | 2:8.2.3995-1 | [DEBIAN-CVE-2021-3968](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3968.md) | Nov 19, 2021 |
| Linux | vim Debian 14 | 2:8.2.3995-1 | [DEBIAN-CVE-2021-3968](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3968.md) | Nov 19, 2021 |
| Linux | vim-common amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-common-debuginfo amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-data amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-debuginfo amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-debugsource amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-default-editor amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-enhanced amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-enhanced-debuginfo amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-filesystem amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-minimal amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |
| Linux | vim-minimal-debuginfo amzn 2023 | 2:9.0.1160-1.amzn2023.0.2 | [ALAS2023-2023-098](https://patchblox.com/security/data/fix/linux/alas2023-2023-098.md) | Feb 17, 2023 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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