What is the CVSS score of CVE-2025-3028?

CVE-2025-3028 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L. EPSS exploitation probability: 0.7%.

Which versions of Mozilla are affected by CVE-2025-3028?

CVE-2025-3028 presents notable security risk, a use-after-free vulnerability rated CVSS 6.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-3028?

Yes, a public proof-of-concept exploit is available for CVE-2025-3028. Prioritise patching immediately. EPSS: 0.7%.

How to fix or mitigate CVE-2025-3028?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Mozilla CVE-2025-3028

MEDIUM

Use After Free (CWE-416)

2025-04-01 security@mozilla.org

Information Disclosure Use After Free Memory Corruption Mozilla

6.5

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Lifecycle Timeline

Patch released

Apr 05, 2026 - 20:30 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:34 vuln.today

PoC Detected

Nov 03, 2025 - 20:18 vuln.today

Public exploit code

CVE Published

Apr 01, 2025 - 13:15 nvd

MEDIUM 6.5

DescriptionNVD

JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. This vulnerability affects Firefox < 137, Firefox ESR < 115.22, Firefox ESR < 128.9, Thunderbird < 137, and Thunderbird < 128.9.

AnalysisAI

JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. This vulnerability affects Firefox < 137, Firefox ESR < 115.22, Firefox ESR < 128.9, Thunderbird < 137, and Thunderbird < 128.9. Affected products include: Mozilla Firefox, Mozilla Thunderbird.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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CVE-2025-3028 vulnerability details – vuln.today

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Mozilla CVE-2025-3028

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code