# ALSA-2021:4236: tcpdump security update

ALSA-2021:4236, released November 9, 2021, fixes 1 CVE in tcpdump (version 14:4.9.3-2.el8). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/alsa-2021-4236
- Platform: Linux
- Released: Nov 9, 2021
- Priority: High (Closes CVE-2020-8037, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2021:4236

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tcpdump](https://patchblox.com/security/data/product/linux/tcpdump.md) | almalinux 8 | 14:4.9.3-2.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-8037](https://patchblox.com/security/data/cve/CVE-2020-8037.md) | High | tcpdump: The tcpdump packages contain the tcpdump utility for monitoring network traffic | 7.5 | 0.0311 |  |

---

Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo