# DSA-5009-1: tomcat9 security update

DSA-5009-1, released November 12, 2021, fixes 1 CVE in tomcat9 (version 9.0.43-2~deb11u3). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dsa-5009-1
- Platform: Linux
- Released: Nov 12, 2021
- Priority: High (Closes CVE-2021-42340, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2021-42340

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tomcat9](https://patchblox.com/security/data/product/linux/tomcat9.md) | Debian 11.6 (bullseye) | 9.0.43-2~deb11u3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-42340](https://patchblox.com/security/data/cve/CVE-2021-42340.md) | High | pki-servlet-4.0-api: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes linked from t... | 7.5 | 0.1180 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo