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CVE-2026-124914

Site isolation issue in the DOM: Navigation component

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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CVE-2026-124915

Incorrect boundary conditions in the Graphics: WebGPU component

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124917

Sandbox escape due to use-after-free in the Widget: Gtk component

Sandbox escape due to use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
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CVE-2026-124918

Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component

Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124919

Privilege escalation due to use-after-free in the WebRTC: Networking component

Privilege escalation due to use-after-free in the WebRTC: Networking component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124922

Use-after-free in the CSS Transitions and Animations component

Use-after-free in the CSS Transitions and Animations component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124924

Incorrect boundary conditions in the Graphics: WebRender component

Incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124926

Incorrect boundary conditions in the WebRTC component

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124929

Information disclosure in the Layout: Form Controls component

Information disclosure in the Layout: Form Controls component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-124930

Information disclosure in the Address Bar component

Information disclosure in the Address Bar component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-124931

Same-origin policy bypass in the DOM: Core & HTML component

Same-origin policy bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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CVE-2026-124932

Use-after-free in the Graphics component

Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-124933

Sandbox escape in the Console component

Sandbox escape in the Console component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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CVE-2026-88822

QUIC Uses Uninitialized Stack Bytes During Automated Peer Detection

Issue summary: QUIC, when performing automated peer detection, may allow uninitialized stack data to leak into the received address which is then used as the destination for outgoing packets. Impact summary: Applications using QUIC's automated peer detection mechanism may receive an invalid address, leading to connection loss and disclosure of uninitialized stack data to an attacker observing the outgoing network traffic. CWE: CWE-457 (Use of Uninitialized Variable) Description: The OpenSSL QUIC stack contains a feature in which, when using an already connected socket, it will auto-detect the peer address during the SSL handshake. This feature uses the getpeername() function, passing a buffer of sufficient length to hold any supported address family, but passes a buffer length that is only sized such that larger addresses, such as IPv6, cannot be retrieved. The getpeername() function however, still returns the full address length, which is accepted as the valid input buffer length, leading to the address buffer containing uninitialized stack data instead of the actual peer address. The invalid peer address is then used as destination for the outgoing packets which leads to a connectivity breakage and a leakage of the uninitialized stack data to passive network observers. FIPS impact: no The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this CVE as the affected protocol is not implemented in the FIPS module.

CVSS n/a EPSS < 1% KEV · Not listed
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CVE-2026-56956

In EncodeT140 of TextRtpPayloadEncoderNode.cpp, there is a possible Heap Buffer Overflow due to a logic error in the code. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-57005

In EuiccPort.buildUiccAccessRule of EuiccPort.java, there is a possible Confused Deputy due to a confused deputy. This could lead to remote escalation of privilege with execution privileges needed. User interaction is for exploitation.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-57009

In GC2AvcDec of GC2AvcDec.cpp, there is a possible Logic error due to a logic error in the code. This could lead to local escalation of privilege with execution privileges needed. User interaction is for exploitation.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-58806

In get_sswrp_state of cpm_mbox_srv/main.c, there is a possible Logic error due to a logic error in the code. This could lead to local information disclosure with execution privileges needed. User interaction is for exploitation.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
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CVE-2026-58808

In multiple locations, there is a possible way to dump secure cache lines into non-secure memory on warm reset due to a missing permission check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 2.3 Low EPSS < 1% KEV · Not listed
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