CVE-2025-10529

MEDIUM

6.5

CVSS v3

Description

Same-origin policy bypass in the Layout component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

CWE-942

How to fix

Remediation Available

firefoxDebian

Fixed in:143.0-1CVE-2025-10529

firefoxRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9.ppc64RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

firefoxRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9.ppc64RHSA-2025:17453

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

firefox-debuginfoRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el7_9.ppc64RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

firefox-debuginfoRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9.ppc64RHSA-2025:17453

Fixed in:0:140.3.0-1.el7_9RHSA-2025:17453

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

firefox-debugsourceRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

firefox-debugsourceRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16109

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17371

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17372

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17368

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17367

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16260

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17373

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

firefox-x11Red Hat / RHEL

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

firefox-x11Rocky

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17378

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17374

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16108

thunderbirdRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

thunderbirdRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

thunderbird-debuginfoRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

thunderbird-debugsourceRocky

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:140.3.0-1.el10_0RHSA-2025:16157

Fixed in:0:140.3.0-1.el8_4RHSA-2025:17341

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_2RHSA-2025:17340

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_6RHSA-2025:17342

Fixed in:0:140.3.0-1.el8_10RHSA-2025:16589

Fixed in:0:140.3.0-1.el8_8RHSA-2025:17343

Fixed in:0:140.3.0-1.el9_0RHSA-2025:17344

Fixed in:0:140.3.0-1.el9_2RHSA-2025:17345

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

Fixed in:0:140.3.0-1.el9_6RHSA-2025:16156

Fixed in:0:140.3.0-1.el9_4RHSA-2025:17346

thunderbirdUbuntu

Fixed in:1:140.7.1+build1-0ubuntu0.22.04.1USN-7991-1

DeveloperEditionWindows application

Affected:143.0Fixed in:143.0Mozilla

Affected:140.3.0Fixed in:140.3.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:143.0Fixed in:143.0Mozilla

Affected:140.3.0Fixed in:140.3.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:143.0Fixed in:143.0Mozilla

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Vendor Advisory4

Other references3

Related Vulnerabilities

Other CWE-942 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-22812	High	8.8	17%	-	Fix
CVE-2023-38122	High	7.2	1.9%	-	Fix
CVE-2019-14860	Medium	6.5	1.2%	-	Fix
CVE-2023-38125	High	8.8	1.1%	-	Fix
CVE-2022-31736	Critical	9.8	1.1%	-	Fix
CVE-2020-36851	Unscored	-	1.0%	-	-

Common questions

How do I fix CVE-2025-10529?

Published advisories record a fix for 19 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2025-10529 being actively exploited?

Not that we know of. CVE-2025-10529 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.28% is the estimated probability that it will be exploited in the next 30 days. That is higher than 20% of all scored CVEs.

How severe is CVE-2025-10529?

CVE-2025-10529 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-10529 affect?

Published advisories record a fix for firefox (Debian), firefox (Rocky), firefox (Red Hat / RHEL), firefox-debuginfo (Red Hat / RHEL), and 15 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2025-10529

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-13.