# DSA-5016-1: nss security update

DSA-5016-1, released December 1, 2021, fixes 1 CVE in nss (version 2:3.61-1+deb11u1). None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dsa-5016-1
- Platform: Linux
- Released: Dec 1, 2021
- Priority: Urgent (Closes CVE-2021-43527, rated Critical)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2021-43527

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [nss](https://patchblox.com/security/data/product/linux/nss.md) | Debian 11.6 (bullseye) | 2:3.61-1+deb11u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-43527](https://patchblox.com/security/data/cve/CVE-2021-43527.md) | Urgent | nss-sysinit: Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-... | 9.8 | 0.1756 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo