# CVE-2021-47898: Epson USB Display 1.6.0.0 Unquoted Service Path Vulnerability

> Attackers can gain elevated system access by placing malicious executables in intermediate directories due to an unquoted service path in Epson USB Display.

- **Severity:** High 8.5 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jan 2026
- **Updated:** 5 Mar 2026
- **Also known as:** GHSA-c24p-x9pc-2jh3

## What is CVE-2021-47898?

CVE-2021-47898 is a high-severity vulnerability in Epson USB Display, published on 23 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Epson USB Display 1.6.0.0 contains an unquoted service path vulnerability in the EMP_UDSA service running with LocalSystem privileges. Attackers can exploit the unquoted path by placing malicious executables in intermediate directories to gain elevated system access.

Weakness: CWE-428 (Unquoted Search Path or Element)

## Which versions are affected by CVE-2021-47898?


## How do I fix CVE-2021-47898?

No fix has been published for CVE-2021-47898 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47898 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47898 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47898 and fix it if it is affected.

What it is: CVE-2021-47898 is a high-severity vulnerability in Epson USB Display, published on 23 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47898 exists.

Affected product: Epson USB Display. 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-2021-47898/ (Markdown: https://insights.sbomify.com/CVE-2021-47898/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47898
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47898
- OSV: https://osv.dev/vulnerability/CVE-2021-47898

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47898/
Summaries are generated and may contain mistakes; the official description above is the record.