High severity8.8NVD Advisory· Published Aug 10, 2020· Updated Jun 17, 2026
CVE-2020-15659
CVE-2020-15659
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
46unspecified+ 4 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <79.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <68.11
- (no CPE)range: <79
unspecified+ 2 more
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <68.11
- (no CPE)range: <68.11, <78.1
- osv-coords33 versionspkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg: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%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/pipewire&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/pipewire&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.1
< 68.11.0-lp151.2.47.1+ 32 more
- (no CPE)range: < 68.11.0-lp151.2.47.1
- (no CPE)range: < 68.11.0-lp152.2.7.1
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-3.100.2
- (no CPE)range: < 78.1.0-8.3.1
- (no CPE)range: < 78-9.2.4
- (no CPE)range: < 0.3.6-3.3.2
- (no CPE)range: < 68.11.0-3.91.1
- (no CPE)range: < 78.1.0-78.87.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 68.11.0-3.91.1
- (no CPE)range: < 78.1.0-lp152.2.12.1
- (no CPE)range: < 0.3.6-lp152.2.3.1
- (no CPE)range: < 78.1.0-lp151.2.61.1
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Patches
Vulnerability mechanics
References
10- lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.htmlnvdMailing ListPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlnvdMailing ListPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.htmlnvdMailing ListPatchThird Party Advisory
- usn.ubuntu.com/4443-1/nvdPatchThird Party Advisory
- bugzilla.mozilla.org/buglist.cginvdIssue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-30/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-31/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-32/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-33/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-35/nvdVendor Advisory
News mentions
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