# CVE-2026-50216: Integer overflow in Guardicore Platform Agent

> An integer underflow in the Akamai Guardicore macOS agent's DNS proxy causes a crash when processing short UDP datagrams, leading to denial of service.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** GHSA-426c-439h-xj38

## What is CVE-2026-50216?

CVE-2026-50216 is a medium-severity vulnerability in Akamai Guardicore Platform Agent, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An integer underflow exists in the DNS proxy component of the macOS NetworkExtension system extension shipped with Akamai Guardicore Platform Agent (GPA) for macOS, whereby if a UDP datagram shorter than 96 bytes that begins with a specific value is received, a subsequent size computation underflows to a near-SIZE_MAX value, causing an allocation failure and uncaught Objective-C exception that aborts the root system extension.

Weakness: CWE-191 (Integer Underflow (Wrap or Wraparound))

## Which versions are affected by CVE-2026-50216?


## How do I fix CVE-2026-50216?

No fix has been published for CVE-2026-50216 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-50216 being exploited?

There is no known exploitation of CVE-2026-50216 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-50216 and fix it if it is affected.

What it is: CVE-2026-50216 is a medium-severity vulnerability in Akamai Guardicore Platform Agent, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-50216 in the wild and no public exploit code.

Affected product: Akamai Guardicore Platform Agent. 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-2026-50216/ (Markdown: https://insights.sbomify.com/CVE-2026-50216/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-50216
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50216
- OSV: https://osv.dev/vulnerability/CVE-2026-50216

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-50216/
Summaries are generated and may contain mistakes; the official description above is the record.