What is the CVSS score of CVE-2025-29699?

CVE-2025-29699 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: 0.1%.

Which versions of Netsurf are affected by CVE-2025-29699?

Organizations using NetSurf 3.11 should be aware of notable risk from CVE-2025-29699, a use-after-free vulnerability rated CVSS 6.5.

Is there a public PoC exploit available for CVE-2025-29699?

Yes, a public proof-of-concept exploit is available for CVE-2025-29699. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-29699?

Within 7 days: Identify affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

Netsurf CVE-2025-29699

MEDIUM

Use After Free (CWE-416)

2025-11-03 cve@mitre.org

Memory Corruption Denial Of Service Use After Free Netsurf

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

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

Analysis Generated

Mar 28, 2026 - 19:20 vuln.today

PoC Detected

Nov 05, 2025 - 18:18 vuln.today

Public exploit code

CVE Published

Nov 03, 2025 - 15:15 nvd

MEDIUM 6.5

DescriptionCVE.org

NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function.

AnalysisAI

NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function. 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. NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function. Affected products include: Netsurf-Browser Netsurf.

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.

CVE-2025-29699 vulnerability details – vuln.today

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Netsurf CVE-2025-29699

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code