---
title: "CVE-2025-55037: TkEasyGUI Vulnerable to OS Command Injection"
url: https://erroneo.us/security/cve/CVE-2025-55037/
description: "CVE-2025-55037 (TkEasyGUI (PyPI)): Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in TkEasyGUI…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-09-05
date_modified: 2025-09-05
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-55037"
kev: false
cvss: 9.3
epss: 0.02339
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-55037: TkEasyGUI Vulnerable to OS Command Injection

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 2.3% , percentile 83: FIRST’s model estimates a 2.3% chance of exploitation activity in the next 30 days, higher than 83% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes TkEasyGUI (PyPI) < 1.0.22, fixed in 1.0.22 . Check your lockfile, including transitive dependencies.

## What it is

Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in TkEasyGUI versions prior to v1.0.22. If this vulnerability is exploited, an arbitrary OS command may be executed by a remote unauthenticated attacker if the settings are configured to construct messages from external sources.

## Affected packages

- PyPI `TkEasyGUI` < 1.0.22 → fixed: 1.0.22

## Affected products (CVE record)

- kujirahand TkEasyGUI: versions prior to v1.0.22

## Severity

- jpcert CVSS 3.0: 9.8 `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- jpcert CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 2.34% probability of exploitation activity in the next 30 days; percentile 83.

## Sources

- [GitHub Advisory GHSA-hfrj-3w3g-jv32](https://github.com/advisories/GHSA-hfrj-3w3g-jv32)
- [CVE.org record CVE-2025-55037](https://www.cve.org/CVERecord?id=CVE-2025-55037)
- [NVD entry CVE-2025-55037](https://nvd.nist.gov/vuln/detail/CVE-2025-55037)
- [github.com](https://github.com/kujirahand/tkeasygui-python/releases/tag/v1.0.22)
- [jvn.jp](https://jvn.jp/en/jp/JVN48739895/)

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Source page: https://erroneo.us/security/cve/CVE-2025-55037/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt