SecuriTricks - CVE-2025-45663

Description

An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.

Product(s) Impacted

Vendor	Product	Versions
Netsurf	Netsurf	3.11

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-244

Improper Clearing of Heap Memory Before Release ('Heap Inspection')

Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	netsurf	netsurf	3.11	/	/	/	/	/	/	/

References

https://github.com/Fysac/netsurf-disclosure/tree/main/CVE-2025-45663

https://www.netsurf-browser.org/

CVSS Score

6.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: LOW

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

View Vector String

Timeline

Published: Nov. 3, 2025, 3:15 p.m.
Last Modified: Nov. 4, 2025, 5:16 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

CVE-2025-45663