---
id: CVE-2020-26957
title: >-
  OneCRL was non-functional in the new Firefox for Android due to a missing
  service initialization
summary: >-
  OneCRL was non-functional in the new Firefox for Android due to a missing
  service initialization. This could result in a failure to enforce some
  certificate revocations. *Note: This issue only affected Firefox for Android.
  Other operatin…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-665
vendor: mozilla
product: firefox_mobile
affected:
  - firefox_mobile < 83.0
patched:
  - firefox_mobile 83.0
published: '2020-12-09'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-26957'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1667179'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2020-50/'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1667179'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2020-50/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00549
epssPercentile: 0.4355
ingestedAt: '2026-08-19T15:41:15.047Z'
---

## Overview

OneCRL was non-functional in the new Firefox for Android due to a missing service initialization. This could result in a failure to enforce some certificate revocations. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

## Affected

- `firefox_mobile < 83.0`

## Remediation

Upgrade past the affected range:

- `firefox_mobile 83.0`