CVE-2018-17780
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user...
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
CVE-2018-17780- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
CVE-2018-17780- Updated
- 2026-11-02
EUVDEUVD-2018-9527 No score
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
EUVD-2018-9527- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r3p8-5cf3-rwmg
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user...
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
GHSA-r3p8-5cf3-rwmg- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
CVE-2018-17780- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-17780
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
DEBIAN-CVE-2018-17780- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-17780
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
- Record
UBUNTU-CVE-2018-17780- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
telegram-desktopDebian:12 |
before 1.4.0-1 | 1.4.0-1 |
telegram-desktopDebian:14 |
before 1.4.0-1, plus listed versions 1.0.14-11.0.29-11.1.0-11.1.10-11.1.18-1 Show 16 moreShow less1.1.19-11.1.19-21.1.23-11.1.23-1~bpo9+11.1.23-21.1.23-31.2.1-11.2.1-21.2.15-11.2.17-11.2.6-11.2.6-21.3.10-11.3.10-21.3.14-11.3.7-1 |
1.4.0-1 |
telegram-desktopUbuntu:18.04:LTS |
All versions, plus listed versions 1.1.23-11.1.23-1build11.1.23-21.1.23-31.2.6-1 Show 7 moreShow less1.2.6-21.2.6-2build11.2.6-2build21.2.6-2build31.2.15-11.2.15-1build11.2.17-1 |
None known |
telegram-desktopUbuntu:20.04:LTS |
All versions, plus listed versions 1.8.8-11.8.15-21.9.8~slim-11.9.14+ds-11.9.14+ds-2 Show 5 moreShow less1.9.21+ds-12.0.1+ds-12.0.1+ds-1build12.1.7+ds-2~ubuntu20.04.13.1.1+ds-1~ubuntu20.04.1 |
None known |
telegram-desktopUbuntu:22.04:LTS |
All versions, plus listed versions 3.1.1+ds-13.5.2+ds-13.6.1+ds-2build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-17780 is a medium vulnerability (CVSS 6.5) in Telegram Desktop, published September 29, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.80%, the 78th percentile. Fixed in telegram-desktop 1.4.0-1.