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CVE Vulnerabilities

CVE-2026-100759

Use of Uninitialized Variable

Published: Sep 29, 2026 | Modified: Oct 13, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-100759
CWEhttps://cwe.mitre.org/data/definitions/457.html

Uninitialized memory in the Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Weakness

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*115.42.0 (excluding)
FirefoxMozilla116.0.0 (including)140.17.0 (excluding)
FirefoxMozilla141.0.0 (including)153.4.0 (excluding)
FirefoxMozilla154.0.0 (including)157.0.0 (excluding)
ThunderbirdMozilla*140.17.0 (excluding)
ThunderbirdMozilla141.0 (including)153.4.0 (excluding)
ThunderbirdMozilla154.0 (including)157.0 (excluding)
Red Hat Enterprise Linux 10RedHatfirefox-0:140.17.0-1.el10_2*
Red Hat Enterprise Linux 10RedHatthunderbird-0:140.17.0-1.el10_2*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatthunderbird-0:140.17.0-1.el10_0*
Red Hat Enterprise Linux 8RedHatfirefox-0:140.17.0-1.el8_10*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatthunderbird-0:140.17.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatthunderbird-0:140.17.0-1.el8_4*
Red Hat Enterprise Linux 9RedHatfirefox-0:140.17.0-1.el9_8*
Red Hat Enterprise Linux 9RedHatthunderbird-0:140.17.0-1.el9_8*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatthunderbird-0:140.17.0-1.el9_2*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHatthunderbird-0:140.17.0-1.el9_4*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatthunderbird-0:140.17.0-1.el9_6*
Mozjs102Ubuntuesm-apps/noble*
Mozjs102Ubuntujammy*
Mozjs102Ubuntunoble*
Mozjs115Ubuntunoble*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs68Ubuntuesm-infra/focal*
Mozjs78Ubuntuesm-apps/jammy*
Mozjs78Ubuntujammy*
Mozjs91Ubuntujammy*
ThunderbirdUbuntujammy*

Potential Mitigations

References

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