CVE-2025-29699 Use after free in n/a

Medium 6.5 Published 3 Nov 2025 Updated 4 Nov 2025

A use-after-free flaw in NetSurf allows attackers to potentially execute arbitrary code or cause a crash via crafted web content.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-29699?

CVE-2025-29699 is a medium-severity use after free vulnerability in n/a, published on 3 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-416

Which versions are affected by CVE-2025-29699?

It affects 1 product.

Products include Netsurf-Browser Netsurf.

How do I fix CVE-2025-29699?

No fix has been published for CVE-2025-29699 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2025-29699 being exploited?

There is no known exploitation of CVE-2025-29699 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2025-29699, GHSA-7cw3-hmgq-847v, UBUNTU-CVE-2025-29699.