CVE-2025-4919

EUVD-2025-15598
An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. This vulnerability was fixed in Firefox 138.0.4, Firefox ESR 128.10.1, Firefox ESR 115.23.1, Thunderbird 128.10.2, and Thunderbird 138.0.2.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 51%
Affected Products (NVD)
VendorProductVersion
mozillafirefox_esr
𝑥
< 115.23.1
mozillafirefox
𝑥
< 138.0.4
mozillafirefox_esr
116.0 ≤
𝑥
< 128.10.1
mozillathunderbird
𝑥
< 128.10.2
mozillathunderbird
138.0 ≤
𝑥
< 138.0.2
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
focal
dne
jammy
not-affected
noble
not-affected
oracular
not-affected
plucky
not-affected
questing
not-affected
resolute
not-affected
thunderbird
focal
dne
jammy
Fixed 1:128.12.0+build1-0ubuntu0.22.04.1
released
noble
not-affected
oracular
not-affected
plucky
not-affected
questing
not-affected
resolute
not-affected
mozjs38
bionic
needs-triage
focal
dne
jammy
dne
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs52
bionic
ignored
focal
ignored
jammy
dne
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs68
focal
ignored
jammy
dne
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs78
focal
dne
jammy
ignored
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs91
focal
dne
jammy
ignored
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs102
focal
dne
jammy
ignored
noble
ignored
oracular
dne
plucky
dne
questing
dne
resolute
dne
mozjs115
focal
dne
jammy
dne
noble
ignored
oracular
ignored
plucky
ignored
questing
dne
resolute
dne
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
MozillaFirefox
suse enterprise desktop 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise server 12 SP3
128.10.1-112.259.1
fixed
suse enterprise server 12 SP5
128.10.1-112.259.1
fixed
suse enterprise server 15 SP2
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP6
128.10.1-150200.152.182.1
fixed
MozillaFirefox-devel
suse enterprise desktop 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise server 12 SP3
128.10.1-112.259.1
fixed
suse enterprise server 12 SP5
128.10.1-112.259.1
fixed
suse enterprise server 15 SP2
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP6
128.10.1-150200.152.182.1
fixed
MozillaFirefox-translations-common
suse enterprise desktop 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise server 12 SP3
128.10.1-112.259.1
fixed
suse enterprise server 12 SP5
128.10.1-112.259.1
fixed
suse enterprise server 15 SP2
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP6
128.10.1-150200.152.182.1
fixed
MozillaFirefox-translations-other
suse enterprise desktop 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise sap 15 SP6
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP2
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP3
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP4
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP5
128.10.1-150200.152.182.1
fixed
suse enterprise server 15 SP6
128.10.1-150200.152.182.1
fixed
MozillaThunderbird
suse enterprise desktop 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise desktop 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP7
128.10.2-150200.8.218.1
fixed
MozillaThunderbird-translations-common
suse enterprise desktop 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise desktop 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP7
128.10.2-150200.8.218.1
fixed
MozillaThunderbird-translations-other
suse enterprise desktop 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise desktop 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise sap 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise server 15 SP7
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP6
128.10.2-150200.8.218.1
fixed
suse enterprise workstation 15 SP7
128.10.2-150200.8.218.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
firefox
RHEL 9
0:128.10.1-1.el9_6
fixed
firefox-x11
RHEL 9
0:128.10.1-1.el9_6
fixed
thunderbird
RHEL 9
0:128.11.0-1.el9_6
fixed
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1966614
https://www.mozilla.org/security/advisories/mfsa2025-36/
https://www.mozilla.org/security/advisories/mfsa2025-37/
https://www.mozilla.org/security/advisories/mfsa2025-38/
https://www.mozilla.org/security/advisories/mfsa2025-40/
https://www.mozilla.org/security/advisories/mfsa2025-41/
https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html