Medium severity6.5NVD Advisory· Published Mar 31, 2021· Updated Jun 17, 2026
CVE-2021-23982
CVE-2021-23982
Description
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
71<78.9+ 2 more
- (no CPE)range: <78.9
- (no CPE)range: unspecified
- (no CPE)range: unspecified
<78.9+ 1 more
- (no CPE)range: <78.9
- (no CPE)range: unspecified
- osv-coords66 versionspkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg: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%2015%20SP1-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg: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%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Server%204.0pkg: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/mozilla-nspr&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Micro%205.0pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/mozilla-nspr&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2
< 128.5.1-1.1+ 65 more
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 78.9.0-lp152.2.52.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 78.9.1-lp152.2.38.1
- (no CPE)range: < 91.1.1-1.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78-4.16.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-8.35.1
- (no CPE)range: < 78.9.0-78.123.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-3.136.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 78.9.0-112.54.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 4.25.1-3.17.1
- (no CPE)range: < 78.9.1-8.20.1
Patches
Vulnerability mechanics
References
4- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-10/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-11/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-12/nvdVendor Advisory
News mentions
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