# RHSA-2020:0919: thunderbird security update

RHSA-2020:0919, released March 23, 2020, fixes 7 CVEs in thunderbird (version 0:68.6.0-1.el8_1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2020-0919
- Platform: Linux
- Released: Mar 23, 2020
- Priority: High (Closes CVE-2020-6811, high severity)
- CVEs: 7, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2020:0919

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [thunderbird](https://patchblox.com/security/data/product/linux/thunderbird.md) | RHEL 8 | 0:68.6.0-1.el8_1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-6811](https://patchblox.com/security/data/cve/CVE-2020-6811.md) | High | Firefox ESR: The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request,… | 8.8 | 0.0327 |  |
| [CVE-2020-6806](https://patchblox.com/security/data/cve/CVE-2020-6806.md) | High | Firefox ESR: By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end… | 8.8 | 0.0261 |  |
| [CVE-2020-6814](https://patchblox.com/security/data/cve/CVE-2020-6814.md) | High | Firefox ESR: Mozilla developers reported memory safety bugs present in Firefox and Thunderbird 68.5. | 9.8 | 0.0187 |  |
| [CVE-2020-6805](https://patchblox.com/security/data/cve/CVE-2020-6805.md) | High | Firefox ESR: When removing data about an origin whose tab was recently closed, a use-after-free could occur in the… | 8.8 | 0.0149 |  |
| [CVE-2020-6807](https://patchblox.com/security/data/cve/CVE-2020-6807.md) | High | Firefox ESR: When a device was changed while a stream was about to be destroyed, the <code>stream-reinit</code> task… | 8.8 | 0.0147 |  |
| [CVE-2019-20503](https://patchblox.com/security/data/cve/CVE-2019-20503.md) | Routine | xul-ext-lightning: usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init. | 6.5 | 0.0314 |  |
| [CVE-2020-6812](https://patchblox.com/security/data/cve/CVE-2020-6812.md) | Routine | Firefox ESR: The first time AirPods are connected to an iPhone, they become named after the user's name by default… | 6.1 | 0.0160 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo