Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-1012— Use-after-free during concurrent delazification

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是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 135版本之前存在安全漏洞，该漏洞源于并发去齐平化期间的竞争可能会导致释放后重用。

AI Predicted 7.0 Difficulty: Moderate EPSS 0.45% · P37
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-1012

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Use-after-free during concurrent delazification
Source: CVE Program / CVE List V5
Vulnerability Description
A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 135版本之前存在安全漏洞，该漏洞源于并发去齐平化期间的竞争可能会导致释放后重用。
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 115.20 ~ 115.* -
Mozilla Thunderbird 128.7 ~ 128.* -

II. Public POCs for CVE-2025-1012

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-1012

请登录查看更多情报信息。

Vendor Advisories for CVE-2025-1012 (5)

Same Patch Batch · Mozilla · 2025-02-04 · 13 CVEs total

CVE-2025-1015 Unsanitized address book fields
CVE-2025-1020 Memory safety bugs fixed in Firefox 135 and Thunderbird 135
CVE-2025-1016 Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR
CVE-2025-1017 Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbi
CVE-2025-0510 Address of e-mail sender can be spoofed by malicious email
CVE-2025-1014 Certificate length was not properly checked
CVE-2025-1019 Fullscreen notification not properly displayed
CVE-2025-1013 Potential opening of private browsing tabs in normal browsing windows
CVE-2025-1018 Fullscreen notification is not displayed when fullscreen is re-requested
CVE-2025-1011 A bug in WebAssembly code generation could result in a crash
CVE-2025-1009 Use-after-free in XSLT
CVE-2025-1010 Use-after-free in Custom Highlight

IV. Related Vulnerabilities

Same product: Firefox
Same vendor: Mozilla

V. Comments for CVE-2025-1012

No comments yet

Leave a comment