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CVE-2026-8092— Memory safety bugs fixed in Firefox ESR 115.35.2, Firefox ESR 140.10.2 and Firefox 150.0.2

Quick assessment

Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mozilla Firefox ESR是美国Mozilla基金会的Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox ESR 115.35.1之前版本、Firefox ESR 140.10.1之前版本和Firefox 150.0.1之前版本存在安全漏洞，该漏洞源于内存安全错误，可能导致内存损坏并可能被利用执行任意代码。

AI Predicted 8.0 Difficulty: Moderate EPSS 0.38% · P32

Affected Version Matrix 5

VendorProduct Version RangeStatus
Mozilla Firefox 115.35.2≤ 115.* unaffected
140.10.2≤ 140.* unaffected
150.0.2≤ * unaffected
Mozilla Thunderbird 140.10.2≤ 140.* unaffected
150.0.2≤ * unaffected
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I. Basic Information for CVE-2026-8092

Vulnerability Information
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Vulnerability Title
Memory safety bugs fixed in Firefox ESR 115.35.2, Firefox ESR 140.10.2 and Firefox 150.0.2
Source: CVE Program / CVE List V5
Vulnerability Description
Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla Firefox ESR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox ESR是美国Mozilla基金会的Firefox(Web浏览器)的一个延长支持版本。 Mozilla Firefox ESR 115.35.1之前版本、Firefox ESR 140.10.1之前版本和Firefox 150.0.1之前版本存在安全漏洞，该漏洞源于内存安全错误，可能导致内存损坏并可能被利用执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mozilla Firefox 115.35.2 ~ 115.* -
Mozilla Thunderbird 140.10.2 ~ 140.* -

II. Public POCs for CVE-2026-8092

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III. Intelligence Information for CVE-2026-8092

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Vendor Advisories for CVE-2026-8092 (6)

Same Patch Batch · Mozilla · 2026-05-07 · 5 CVEs total

CVE-2026-8093 Memory safety bugs fixed in Firefox 150.0.2
CVE-2026-8094 Other issue in the WebRTC component
CVE-2026-8091 Incorrect boundary conditions in the Audio/Video: Playback component
CVE-2026-8090 Use-after-free in the DOM: Networking component

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2026-8092

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