# CVE-2020-10126: Code injection in SelfServ ATM

> Attackers with physical access can execute arbitrary code with SYSTEM privileges by exploiting unvalidated software updates on NCR ATMs.

- **Severity:** High 7.6 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/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:** 21 Aug 2020
- **Updated:** 4 Nov 2025
- **Also known as:** GHSA-mp5p-gq8q-gcgg

## What is CVE-2020-10126?

CVE-2020-10126 is a high-severity code injection vulnerability in NCR SelfServ ATM, published on 21 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NCR SelfServ ATMs running APTRA XFS 05.01.00 do not properly validate softare updates for the bunch note acceptor (BNA), enabling an attacker with physical access to internal ATM components to restart the host computer and execute arbitrary code with SYSTEM privileges because while booting, the update process looks for CAB archives on removable media and executes a specific file without first validating the signature of the CAB archive.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature), CWE-305 (Authentication Bypass by Primary Weakness)

## Which versions are affected by CVE-2020-10126?

It affects 1 product.


Products: Ncr Aptra Xfs.

## How do I fix CVE-2020-10126?

No fix has been published for CVE-2020-10126 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-10126 being exploited?

There is no known exploitation of CVE-2020-10126 in the wild and no public exploit code.

## Other vulnerabilities in NCR SelfServ ATM

- [CVE-2020-10125](https://insights.sbomify.com/CVE-2020-10125/): Weak cryptography in SelfServ ATM (high 7.6)
- [CVE-2020-9063](https://insights.sbomify.com/CVE-2020-9063/): Memory corruption in SelfServ ATM (high 7.6)
- [CVE-2020-10124](https://insights.sbomify.com/CVE-2020-10124/): Missing authorization in SelfServ ATM (high 7.1)
- [CVE-2020-10123](https://insights.sbomify.com/CVE-2020-10123/): Auth bypass in SelfServ ATM (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-10126 and fix it if it is affected.

What it is: CVE-2020-10126 is a high-severity code injection vulnerability in NCR SelfServ ATM, published on 21 Aug 2020. 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-2020-10126 in the wild and no public exploit code.

Affected product: NCR SelfServ ATM. 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-2020-10126/ (Markdown: https://insights.sbomify.com/CVE-2020-10126/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-10126
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-10126
- OSV: https://osv.dev/vulnerability/CVE-2020-10126

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-10126/
Summaries are generated and may contain mistakes; the official description above is the record.