Buffer overflow in Mozilla products - CVE-2025-9187

Vulnerability identifier: #VU114391

CSH Severity: High

CVSS v4 BT: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-9187

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Firefox for Android
Firefox Focus for Android
Mozilla Firefox
SUSE Linux Enterprise Server 12 SP5
SUSE Manager Server 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Proxy 4.3
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Enterprise Storage
Desktop Applications Module
Basesystem Module
openSUSE Leap
Mozilla Thunderbird
libsoftokn3-debuginfo
mozilla-nss-certs-32bit
mozilla-nss-sysinit-debuginfo-32bit
mozilla-nss-devel
libfreebl3
mozilla-nss-tools
mozilla-nss-sysinit-debuginfo
mozilla-nss
mozilla-nss-sysinit
libsoftokn3
libfreebl3-debuginfo
mozilla-nss-tools-debuginfo
mozilla-nss-certs-debuginfo
mozilla-nss-debugsource
mozilla-nss-certs
mozilla-nss-debuginfo
libsoftokn3-32bit
mozilla-nss-debuginfo-32bit
libfreebl3-debuginfo-32bit
libfreebl3-32bit
mozilla-nss-certs-debuginfo-32bit
libsoftokn3-debuginfo-32bit
mozilla-nss-sysinit-32bit
mozilla-nss-32bit
mozilla-nss-sysinit-32bit-debuginfo
mozilla-nss-certs-32bit-debuginfo
libfreebl3-32bit-debuginfo
mozilla-nss-32bit-debuginfo
libsoftokn3-32bit-debuginfo
libsoftokn3-64bit-debuginfo
libfreebl3-64bit
mozilla-nss-certs-64bit
mozilla-nss-64bit-debuginfo
mozilla-nss-sysinit-64bit-debuginfo
mozilla-nss-sysinit-64bit
libsoftokn3-64bit
mozilla-nss-64bit
mozilla-nss-certs-64bit-debuginfo
libfreebl3-64bit-debuginfo
MozillaFirefox-translations-common
MozillaFirefox-debugsource
MozillaFirefox
MozillaFirefox-debuginfo
MozillaFirefox-devel
MozillaFirefox-branding-upstream
MozillaFirefox-translations-other

Install updates from vendor's website.

Firefox for Android - update to 142.0
Mozilla Firefox - update to 142.0
Firefox Focus for Android - update to 142.0
Mozilla Thunderbird - update to 142.0
libsoftokn3-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-certs-32bit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-sysinit-debuginfo-32bit - update to 3.112.2-58.133.1
mozilla-nss-devel - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libfreebl3 - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-tools - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-sysinit-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-sysinit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libsoftokn3 - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libfreebl3-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-tools-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-certs-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-debugsource - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-certs - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-debuginfo - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libsoftokn3-32bit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-debuginfo-32bit - update to 3.112.2-58.133.1
libfreebl3-debuginfo-32bit - update to 3.112.2-58.133.1
libfreebl3-32bit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-certs-debuginfo-32bit - update to 3.112.2-58.133.1
libsoftokn3-debuginfo-32bit - update to 3.112.2-58.133.1
mozilla-nss-sysinit-32bit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-32bit - addressed in versions 3.112.2-58.133.1, 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-sysinit-32bit-debuginfo - addressed in versions 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-certs-32bit-debuginfo - addressed in versions 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libfreebl3-32bit-debuginfo - addressed in versions 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
mozilla-nss-32bit-debuginfo - addressed in versions 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libsoftokn3-32bit-debuginfo - addressed in versions 3.112.2-150000.3.132.1, 3.112.2-150400.3.60.1
libsoftokn3-64bit-debuginfo - update to 3.112.2-150400.3.60.1
libfreebl3-64bit - update to 3.112.2-150400.3.60.1
mozilla-nss-certs-64bit - update to 3.112.2-150400.3.60.1
mozilla-nss-64bit-debuginfo - update to 3.112.2-150400.3.60.1
mozilla-nss-sysinit-64bit-debuginfo - update to 3.112.2-150400.3.60.1
mozilla-nss-sysinit-64bit - update to 3.112.2-150400.3.60.1
libsoftokn3-64bit - update to 3.112.2-150400.3.60.1
mozilla-nss-64bit - update to 3.112.2-150400.3.60.1
mozilla-nss-certs-64bit-debuginfo - update to 3.112.2-150400.3.60.1
libfreebl3-64bit-debuginfo - update to 3.112.2-150400.3.60.1
MozillaFirefox-translations-common - addressed in versions 140.2.0-112.276.1, 140.2.0-150200.152.198.1
MozillaFirefox-debugsource - addressed in versions 140.2.0-112.276.1, 140.2.0-150200.152.198.1
MozillaFirefox - addressed in versions 140.2.0-112.276.1, 140.2.0-150200.152.198.1
MozillaFirefox-debuginfo - addressed in versions 140.2.0-112.276.1, 140.2.0-150200.152.198.1
MozillaFirefox-devel - addressed in versions 140.2.0-112.276.1, 140.2.0-150200.152.198.1
MozillaFirefox-branding-upstream - update to 140.2.0-150200.152.198.1
MozillaFirefox-translations-other - update to 140.2.0-150200.152.198.1

• https://www.mozilla.org/security/advisories/mfsa2025-64/
• https://www.mozilla.org/security/advisories/mfsa2025-70/

• Multiple vulnerabilities in Mozilla Firefox
• Multiple vulnerabilities in Thunderbird
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox
• SUSE update for mozilla-nss
• SUSE update for mozilla-nss
• SUSE update for mozilla-nss