# tor 0.4.2.7-1ubuntu0.1~esm1: tor 0.4.2.7-1ubuntu0.1~esm1 for Ubuntu 20.04 LTS (focal)

tor 0.4.2.7-1ubuntu0.1~esm1, released August 29, 2021, fixes 6 CVEs in tor. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-focal-tor-0.4.2.7-1ubuntu0.1-esm1
- Platform: Linux
- Released: Aug 29, 2021
- Priority: Routine (Closes 6 CVEs, none high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tor](https://patchblox.com/security/data/product/linux/tor.md) | Ubuntu 20.04 LTS (focal) | 0.4.2.7-1ubuntu0.1~esm1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-34548](https://patchblox.com/security/data/cve/CVE-2021-34548.md) | Routine | tor: An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003 | n/a | 0.0260 |  |
| [CVE-2021-28090](https://patchblox.com/security/data/cve/CVE-2021-28090.md) | Routine | tor: Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka... | n/a | 0.0210 |  |
| [CVE-2021-38385](https://patchblox.com/security/data/cve/CVE-2021-38385.md) | Routine | tor: Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and singl... | n/a | 0.0169 |  |
| [CVE-2021-28089](https://patchblox.com/security/data/cve/CVE-2021-28089.md) | Routine | tor: Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, ak... | n/a | 0.0167 |  |
| [CVE-2021-34549](https://patchblox.com/security/data/cve/CVE-2021-34549.md) | Routine | tor: An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005 | n/a | 0.0161 |  |
| [CVE-2021-34550](https://patchblox.com/security/data/cve/CVE-2021-34550.md) | Routine | tor: An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006 | n/a | 0.0156 |  |

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Data as of 2026-11-13T14:02:24Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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