# tcpreplay 4.2.6-1ubuntu0.1~esm5: tcpreplay 4.2.6-1ubuntu0.1~esm5 for Ubuntu 18.04.6 LTS (bionic)

tcpreplay 4.2.6-1ubuntu0.1~esm5, released March 12, 2024, fixes 9 CVEs in tcpreplay. 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/ubuntu-bionic-tcpreplay-4.2.6-1ubuntu0.1-esm5
- Platform: Linux
- Released: Mar 12, 2024
- Priority: High (Closes CVE-2023-27783, high severity)
- CVEs: 9, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tcpreplay](https://patchblox.com/security/data/product/linux/tcpreplay.md) | Ubuntu 18.04.6 LTS (bionic) | 4.2.6-1ubuntu0.1~esm5 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-27783](https://patchblox.com/security/data/cve/CVE-2023-27783.md) | High | tcpreplay: An issue found in TCPreplay tcprewrite v.4.4.3 allows a remote attacker to cause a denial of service via the tcpedit_... | 7.5 | 0.0151 |  |
| [CVE-2023-27787](https://patchblox.com/security/data/cve/CVE-2023-27787.md) | High | tcpreplay: An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the parse_list function a... | 7.5 | 0.0148 |  |
| [CVE-2023-27784](https://patchblox.com/security/data/cve/CVE-2023-27784.md) | High | tcpreplay: An issue found in TCPReplay v.4.4.3 allows a remote attacker to cause a denial of service via the read_hexstring func... | 7.5 | 0.0147 |  |
| [CVE-2023-27785](https://patchblox.com/security/data/cve/CVE-2023-27785.md) | High | tcpreplay: An issue found in TCPreplay TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the parse endpo... | 7.5 | 0.0147 |  |
| [CVE-2023-27786](https://patchblox.com/security/data/cve/CVE-2023-27786.md) | High | tcpreplay: An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function. | 7.5 | 0.0147 |  |
| [CVE-2023-27789](https://patchblox.com/security/data/cve/CVE-2023-27789.md) | High | tcpreplay: An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the cidr2cidr function at... | 7.5 | 0.0147 |  |
| [CVE-2023-27788](https://patchblox.com/security/data/cve/CVE-2023-27788.md) | High | tcpreplay: An issue found in TCPrewrite v.4.4.3 allows a remote attacker to cause a denial of service via the ports2PORT functio... | 7.5 | 0.0138 |  |
| [CVE-2023-43279](https://patchblox.com/security/data/cve/CVE-2023-43279.md) | Routine | tcpreplay: Null Pointer Dereference in mask_cidr6 component at cidr.c in Tcpreplay 4.4.4 allows attackers to crash the applicati... | 6.5 | 0.0067 |  |
| [CVE-2023-4256](https://patchblox.com/security/data/cve/CVE-2023-4256.md) | Routine | tcpreplay: Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function... | 5.5 | 0.0033 |  |

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Data as of 2026-11-12T13:55:20Z 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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