CVE-2026-48715 radvdump's Route Information Option Parser has a Stack Buffer Overflow
A stack buffer overflow in radvdump allows attackers to execute arbitrary code or cause denial of service via crafted ICMPv6 packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48715?
CVE-2026-48715 is a high-severity memory corruption vulnerability in radvd-project radvdump, published on 19 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-121
Which versions are affected by CVE-2026-48715?
It affects 1 product.
Linux distribution packages (15)
radvd SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server 16.0 | All versions | 2.21-160000.1.1 |
radvd SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 2.17-150000.5.8.1 |
radvd SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 2.21-160000.1.1 |
radvd openSUSE:Leap 16.0 | All versions | 2.21-160000.1.1 |
radvd openSUSE:Tumbleweed | All versions | 2.21-1.1 |
Products include Radvd.litech Radvd.
How do I fix CVE-2026-48715?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-48715 being exploited?
There is no known exploitation of CVE-2026-48715 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2026-48715, AZL-91275, CLSA-2026-1783420753, CLSA-2026-1783421652, CLSA-2026-1785838548, CLSA-2026-1792441621 and 12 more.