# RHSA-2020:2828: firefox security update

RHSA-2020:2828, released July 6, 2020, fixes 5 CVEs in firefox (version 0:68.10.0-1.el8_2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2020-2828
- Platform: Linux
- Released: Jul 6, 2020
- Priority: High (Closes CVE-2020-12417, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2020:2828

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | RHEL 8 | 0:68.10.0-1.el8_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-12417](https://patchblox.com/security/data/cve/CVE-2020-12417.md) | High | Firefox ESR: Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier,… | 8.8 | 0.0268 |  |
| [CVE-2020-12419](https://patchblox.com/security/data/cve/CVE-2020-12419.md) | High | Firefox ESR: When processing callbacks that occurred during window flushing in the parent process, the associated… | 8.8 | 0.0232 |  |
| [CVE-2020-12420](https://patchblox.com/security/data/cve/CVE-2020-12420.md) | High | Firefox ESR: When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer,… | 8.8 | 0.0186 |  |
| [CVE-2020-12418](https://patchblox.com/security/data/cve/CVE-2020-12418.md) | Routine | Firefox ESR: Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process… | 6.5 | 0.0303 |  |
| [CVE-2020-12421](https://patchblox.com/security/data/cve/CVE-2020-12421.md) | Routine | Firefox ESR: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even… | 6.5 | 0.0184 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo