Critical severity9.8NVD Advisory· Published Aug 1, 2023· Updated Jun 17, 2026

CVE-2023-4056

Description

Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. 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 < 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

Mozilla Corporation/Firefox4 versions
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <116.0
- (no CPE)range: <116, <102.14, <115.1
- (no CPE)range: unspecified
- (no CPE)range: unspecified
Debian/linux3 versions
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
Mozilla Corporation/Thunderbirdllm-fuzzy
osv-coords32 versions
pkg:apk/chainguard/firefox-esr pkg:rpm/almalinux/firefox pkg:rpm/almalinux/firefox-x11 pkg:rpm/almalinux/thunderbird pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.4 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.4 pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP4 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSS pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3 pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP4 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5 pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP4 pkg: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

lists.debian.org/debian-lts-announce/2023/08/msg00008.htmlnvdMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2023/08/msg00010.htmlnvdMailing ListThird Party Advisory
www.debian.org/security/2023/dsa-5464nvdMailing ListThird Party Advisory
www.debian.org/security/2023/dsa-5469nvdMailing ListThird 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/buglist.cginvdBroken LinkIssue Tracking

News mentions

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cvss	0.637
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000