# CVE-2026-59117: Windows Terminal Remote Code Execution Vulnerability

> An integer overflow in Windows Terminal allows remote attackers to execute arbitrary code over the network.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Jul 2026
- **Updated:** 28 Oct 2026
- **Also known as:** GHSA-g52r-hw2c-c98r

## What is CVE-2026-59117?

CVE-2026-59117 is a high-severity vulnerability in Microsoft Windows Terminal App, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code over a network.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2026-59117?

It affects 1 product.


Products: Microsoft Terminal.

## How do I fix CVE-2026-59117?

No fix has been published for CVE-2026-59117 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-59117 being exploited?

There is no known exploitation of CVE-2026-59117 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows Terminal App

- [CVE-2026-54124](https://insights.sbomify.com/CVE-2026-54124/): Windows Terminal Remote Code Execution Vulnerability (high 7.8)
- [CVE-2022-44702](https://insights.sbomify.com/CVE-2022-44702/): Windows Terminal Remote Code Execution Vulnerability (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59117 and fix it if it is affected.

What it is: CVE-2026-59117 is a high-severity vulnerability in Microsoft Windows Terminal App, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-59117 in the wild and no public exploit code.

Affected product: Microsoft Windows Terminal App. 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-2026-59117/ (Markdown: https://insights.sbomify.com/CVE-2026-59117/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59117
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59117
- OSV: https://osv.dev/vulnerability/CVE-2026-59117

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59117/
Summaries are generated and may contain mistakes; the official description above is the record.