VDB
CVE-2026-48715
CVE-2026-48715
PUBLISHED
CVSS 7.7 HIGH
Reported by GitHub_M · Published June 19, 2026
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.
Risk Scores
CVSS 4.0
7.7
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| radvd-project | radvdump | < 2.21 |
| radvd-project | radvdump | < 2.21, < 2.21 |
| alpine | radvd | 0, 0, 0 |
Timeline
- May 26, 2026 CVE Published
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Sep 5, 2026 EPSS Score