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CVE Vulnerabilities

CVE-2025-10536

Exposure of Sensitive Information to an Unauthorized Actor

Published: Sep 16, 2025 | Modified: Nov 03, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
3.4 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-10536
CWEhttps://cwe.mitre.org/data/definitions/200.html

Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

Weakness

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Software

NameVendorStart VersionEnd Version
FirefoxMozilla*140.3.0 (excluding)
FirefoxMozilla*143.0 (excluding)
ThunderbirdMozilla*140.3.0 (excluding)
ThunderbirdMozilla141.0 (including)143.0 (excluding)
Red Hat Enterprise Linux 10RedHatfirefox-0:140.3.0-1.el10_0*
Red Hat Enterprise Linux 10RedHatthunderbird-0:140.3.0-1.el10_0*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatfirefox-0:140.3.0-1.el7_9*
Red Hat Enterprise Linux 8RedHatfirefox-0:140.3.0-1.el8_10*
Red Hat Enterprise Linux 8RedHatthunderbird-0:140.3.0-1.el8_10*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatthunderbird-0:140.3.0-1.el8_2*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatfirefox-0:140.3.0-1.el8_2*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatthunderbird-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatfirefox-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatthunderbird-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatfirefox-0:140.3.0-1.el8_4*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el8_6*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatthunderbird-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatfirefox-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el8_8*
Red Hat Enterprise Linux 9RedHatfirefox-0:140.3.0-1.el9_6*
Red Hat Enterprise Linux 9RedHatthunderbird-0:140.3.0-1.el9_6*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el9_0*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el9_0*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatthunderbird-0:140.3.0-1.el9_2*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatfirefox-0:140.3.0-1.el9_2*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatthunderbird-0:140.3.0-1.el9_4*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatfirefox-0:140.3.0-1.el9_4*
Mozjs102Ubuntuesm-apps/noble*
Mozjs102Ubuntujammy*
Mozjs102Ubuntunoble*
Mozjs115Ubuntunoble*
Mozjs115Ubuntuplucky*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs68Ubuntuesm-infra/focal*
Mozjs78Ubuntuesm-apps/jammy*
Mozjs78Ubuntujammy*
Mozjs91Ubuntujammy*
ThunderbirdUbuntujammy*

Extended Description

There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:

Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:

Information exposures can occur in different ways:

It is common practice to describe any loss of confidentiality as an “information exposure,” but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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