CVE-2026-48715

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the `radvdump` utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, `print_ff()` copies up to 2032 bytes from attacker-controlled packet data into a 16-byte `struct in6_addr` on the stack, overflowing by up to 2016 bytes. Note that the main `radvd` daemon is not affected by the vulnerability. Version 2.21 patches the issue.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/radvd-project/radvd/commit/068bde13e3fd6a5fcdb6859e6a2acd293a325dc5	Patch
https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:radvd.litech:radvd:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-19 20:16

Updated : 2026-06-26 20:17

NVD link : CVE-2026-48715

Mitre link : CVE-2026-48715

CVE.ORG link : CVE-2026-48715

JSON object : View

Products Affected

radvd.litech

radvd

CWE

CWE-121

Stack-based Buffer Overflow

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