Critical severity9.8NVD Advisory· Published May 26, 2020· Updated Jun 17, 2026
CVE-2020-12395
CVE-2020-12395
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39unspecified+ 4 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- (no CPE)range: <76
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <76.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <68.8.0
unspecified+ 2 more
- (no CPE)range: unspecified
- (no CPE)range: <68.8.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <68.8.0
- osv-coords27 versionspkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208
< 68.8.0-78.73.1+ 26 more
- (no CPE)range: < 68.8.0-78.73.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-lp151.2.45.1
- (no CPE)range: < 68.8.0-lp151.2.38.2
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 68.8.0-3.87.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-109.119.1
- (no CPE)range: < 68.8.0-3.80.2
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 68.8.0-109.119.1
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Patches
Vulnerability mechanics
References
7- security.gentoo.org/glsa/202005-03nvdThird Party Advisory
- security.gentoo.org/glsa/202005-04nvdThird Party Advisory
- usn.ubuntu.com/4373-1/nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2020-16/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-17/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-18/nvdVendor Advisory
- bugzilla.mozilla.org/buglist.cginvdBroken LinkIssue Tracking
News mentions
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