# DLA-4274-2: mbedtls security update

DLA-4274-2, released August 30, 2025, fixes 1 CVE in mbedtls (version 2.16.9-0.1+deb11u3). 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/dla-4274-2
- Platform: Linux
- Released: Aug 30, 2025
- Priority: Urgent (Closes CVE-2025-47917, rated Critical)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2025-47917

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mbedtls](https://patchblox.com/security/data/product/linux/mbedtls.md) | Debian 11.6 (bullseye) | 2.16.9-0.1+deb11u3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-47917](https://patchblox.com/security/data/cve/CVE-2025-47917.md) | Urgent | mbedtls: mbedtls - security update | 9.8 | 0.0244 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo