# CVE-2026-18279: Sony XAV-9500ES RTSP SETUP Buffer Overflow Remote Code Execution Vulnerability

> Network-adjacent attackers can execute arbitrary code on Sony XAV-9500ES devices via a buffer overflow in RTSP SETUP packet handling without authentication.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Aug 2026
- **Updated:** 21 Aug 2026
- **Also known as:** GHSA-w47w-hvhg-f7v6

## What is CVE-2026-18279?

CVE-2026-18279 is a high-severity memory corruption vulnerability in Sony XAV-9500ES, published on 20 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Sony XAV-9500ES RTSP SETUP Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of SETUP RTSP packets. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29042.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2026-18279?


## How do I fix CVE-2026-18279?

No fix has been published for CVE-2026-18279 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18279 being exploited?

There is no known exploitation of CVE-2026-18279 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18279 and fix it if it is affected.

What it is: CVE-2026-18279 is a high-severity memory corruption vulnerability in Sony XAV-9500ES, published on 20 Aug 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-2026-18279 in the wild and no public exploit code.

Affected product: Sony XAV-9500ES. 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-2026-18279/ (Markdown: https://insights.sbomify.com/CVE-2026-18279/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18279
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18279
- OSV: https://osv.dev/vulnerability/CVE-2026-18279

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18279/
Summaries are generated and may contain mistakes; the official description above is the record.