CVE-2026-8401 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 22%

Affected Products (NVD)

Vendor	Product	Version
mozilla	firefox	𝑥 < 150.0.3

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

firefox

sid	152.0.1-1 fixed

firefox-esr

bookworm	vulnerable
bookworm (security)	140.12.0esr-1~deb12u1 fixed
bullseye	vulnerable
bullseye (security)	140.12.0esr-1~deb11u1 fixed
forky	140.12.0esr-1 fixed
sid	140.12.0esr-1 fixed
trixie	vulnerable
trixie (security)	140.12.0esr-1~deb13u1 fixed

thunderbird

bookworm	vulnerable
bookworm (security)	1:140.12.0esr-1~deb12u1 fixed
bullseye	vulnerable
bullseye (security)	1:140.12.0esr-1~deb11u1 fixed
forky	1:140.12.0esr-1 fixed
sid	1:140.12.0esr-1 fixed
trixie	vulnerable
trixie (security)	1:140.12.0esr-1~deb13u1 fixed

openSUSE / SLES Releases

openSUSE Product

Release

MozillaFirefox

suse enterprise desktop 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise server 12 SP3	140.11.0-112.318.1 fixed
suse enterprise server 12 SP5	140.11.0-112.318.1 fixed
suse enterprise server 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.152.239.1 fixed

MozillaFirefox-devel

suse enterprise desktop 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise server 12 SP3	140.11.0-112.318.1 fixed
suse enterprise server 12 SP5	140.11.0-112.318.1 fixed
suse enterprise server 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.152.239.1 fixed

MozillaFirefox-translations-common

suse enterprise desktop 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise server 12 SP3	140.11.0-112.318.1 fixed
suse enterprise server 12 SP5	140.11.0-112.318.1 fixed
suse enterprise server 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.152.239.1 fixed

MozillaFirefox-translations-other

suse enterprise desktop 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP4	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP5	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP6	140.11.0-150200.152.239.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.152.239.1 fixed

MozillaThunderbird

suse enterprise desktop 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise workstation 15 SP7	140.11.0-150200.8.274.1 fixed

MozillaThunderbird-translations-common

suse enterprise desktop 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise workstation 15 SP7	140.11.0-150200.8.274.1 fixed

MozillaThunderbird-translations-other

suse enterprise desktop 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise sap 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise server 15 SP7	140.11.0-150200.8.274.1 fixed
suse enterprise workstation 15 SP7	140.11.0-150200.8.274.1 fixed

Red Hat Enterprise Linux Releases

Red Hat Product

Release

firefox

RHEL 9

0:140.11.0-1.el9_8

fixed

firefox-x11

RHEL 9

0:140.11.0-1.el9_8

fixed

thunderbird

RHEL 9

0:140.11.0-1.el9_8

fixed

Common Weakness Enumeration

CWE-693 - Protection Mechanism Failure
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Vulnerability Media Exposure

[GERMAN] Mozilla Firefox und Thunderbird: Mehrere Schwachstellen
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox, Mozilla Firefox ESR und Mozilla Thunderbird ausnutzen, um beliebigen Code auszuführen, um Informationen offenzulegen, Sicherheitsbeschränkungen zu umgehen (z. B. Sandbox-Escape), den Benutzer zu täuschen, Berechtigungen zu eskalieren oder einen Denial-of-Service-Zustand herbeizuführen.
Published: 2026-05-19T22:00:00+00:00

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2038679

https://www.mozilla.org/security/advisories/mfsa2026-45/

https://www.mozilla.org/security/advisories/mfsa2026-47/

https://www.mozilla.org/security/advisories/mfsa2026-48/

https://www.mozilla.org/security/advisories/mfsa2026-51/