Medium severity5.9NVD Advisory· Published Aug 1, 2023· Updated Jun 17, 2026
CVE-2023-4049
CVE-2023-4049
Description
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
38cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <116.0
- (no CPE)range: <116
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- osv-coords32 versionspkg:apk/chainguard/firefox-esrpkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP4pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP4pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5
< 116.0-r0+ 31 more
- (no CPE)range: < 116.0-r0
- (no CPE)range: < 102.14.0-1.el9_2.alma
- (no CPE)range: < 102.14.0-1.el9_2.alma
- (no CPE)range: < 102.14.0-1.el8_8.alma
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 116.0.2-1.1
- (no CPE)range: < 115.1.0-150200.8.127.1
- (no CPE)range: < 115.1.0-150200.8.127.1
- (no CPE)range: < 102.14.0-1.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150000.150.97.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-112.173.1
- (no CPE)range: < 115.1.0-112.173.1
- (no CPE)range: < 115.1.0-150000.150.97.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-112.173.1
- (no CPE)range: < 115.1.0-150000.150.97.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-150200.152.99.1
- (no CPE)range: < 115.1.0-112.173.1
- (no CPE)range: < 115.1.0-150200.8.127.1
- (no CPE)range: < 115.1.0-150200.8.127.1
- (no CPE)range: < 115.1.0-150200.8.127.1
- (no CPE)range: < 115.1.0-150200.8.127.1
Patches
Vulnerability mechanics
References
8- www.debian.org/security/2023/dsa-5464nvdThird Party Advisory
- www.debian.org/security/2023/dsa-5469nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2023-29/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-30/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-31/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required
- lists.debian.org/debian-lts-announce/2023/08/msg00008.htmlnvd
- lists.debian.org/debian-lts-announce/2023/08/msg00010.htmlnvd
News mentions
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