# 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.

- **Severity:** High 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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Jun 2026
- **Updated:** 22 Jun 2026
- **Also known as:** ALPINE-CVE-2026-48715, AZL-91275, CLSA-2026-1783420753, CLSA-2026-1783421652, CLSA-2026-1785838548, CLSA-2026-1792441621, CLSA-2026-1792441848, DEBIAN-CVE-2026-48715, GHSA-52px-gh9p-m379, OESA-2026-2807, OESA-2026-2808, OESA-2026-2809, OESA-2026-2810, SUSE-SU-2026:22836-1, SUSE-SU-2026:3055-1, UBUNTU-CVE-2026-48715, openSUSE-SU-2026:11161-1, openSUSE-SU-2026:21400-1

## 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 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2026-48715?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `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: Radvd.litech Radvd.

## How do I fix CVE-2026-48715?

Upgrade to a fixed version.

## Is CVE-2026-48715 being exploited?

There is no known exploitation of CVE-2026-48715 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48715 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-48715 in the wild and no public exploit code.

Affected product: radvd-project radvdump. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-48715/ (Markdown: https://insights.sbomify.com/CVE-2026-48715/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48715
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48715
- OSV: https://osv.dev/vulnerability/CVE-2026-48715

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48715/
Summaries are generated and may contain mistakes; the official description above is the record.