---
title: "CVE-2019-10044\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-10044?format=md
keywords: index, follow
---

# CVE-2019-10044

Publication date 25 March 2019

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-10044?format=md#impact-score)

Toggle side navigation

## Description

Telegram Desktop before 1.5.12 on Windows, and the Telegram applications
for Android, iOS, and Linux, is vulnerable to an IDN homograph attack when
displaying messages containing URLs. This occurs because the application
produces a clickable link even if (for example) Latin and Cyrillic
characters exist in the same domain name, and the available font has an
identical representation of characters from different alphabets.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| telegram-desktop | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10044)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10044)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-10044)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-10044)

### Other references

* <https://github.com/blazeinfosec/advisories/blob/master/telegram-advisory.txt>
* <https://www.cve.org/CVERecord?id=CVE-2019-10044>