CVE-2020-17448

Telegram Desktop through 2.1.13 allows a spoofed file type to bypass the Dangerous File Type...

7.8 HighFix available

Telegram Desktop through 2.1.13 allows a spoofed file type to bypass the Dangerous File Type Execution protection mechanism, as demonstrated by use of the chat window with a filename that lacks an extension.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.28%Up 0.5 points since Apr 14, 2021

What each source reports

NVD Score used 7.8

Record: CVE-2020-17448
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-863
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-17448
Updated: 2026-11-02

EUVDEUVD-2020-9400 No score

Record: EUVD-2020-9400
Updated: 2026-11-03

GitHub AdvisoriesGHSA-ccch-f948-2h8c No score

Telegram Desktop through 2.1.13 allows a spoofed file type to bypass the Dangerous File Type...

Record: GHSA-ccch-f948-2h8c
Weakness: CWE-863
Updated: 2026-11-02

OSV 7.8

Record: CVE-2020-17448
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-17448 7.8

Record: DEBIAN-CVE-2020-17448
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-17448 7.8

Record: UBUNTU-CVE-2020-17448
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

telegram desktop

Affected packages

Affected packages
Package	Affected	Fixed
`telegram-desktop` Debian:12	before 2.2.0+ds-1	2.2.0+ds-1
`telegram-desktop` Debian:14	before 2.2.0+ds-1, plus listed versions 1.0.14-11.0.29-11.1.0-11.1.10-11.1.18-1 Show 40 moreShow less 1.1.19-11.1.19-21.1.23-11.1.23-1~bpo9+11.1.23-21.1.23-31.2.1-11.2.1-21.2.15-11.2.17-11.2.6-11.2.6-21.3.10-11.3.10-21.3.14-11.3.7-11.4.0-11.5.11-11.5.2-11.5.4-11.5.8-11.7.0-11.7.14-11.8.15-11.8.15-21.8.15-2~bpo10+11.8.2-11.8.2-21.8.4-11.8.8-11.9.14+ds-11.9.14+ds-21.9.21+ds-11.9.8~slim-12.0.1+ds-12.1.0+ds-12.1.4+ds-12.1.5+ds-12.1.7+ds-12.1.7+ds-2	2.2.0+ds-1
`telegram-desktop` Ubuntu: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 less 1.2.6-21.2.6-2build11.2.6-2build21.2.6-2build31.2.15-11.2.15-1build11.2.17-1	None known
`telegram-desktop` Ubuntu: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 less 1.9.21+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

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-17448 is a high vulnerability (CVSS 7.8) in Telegram Desktop, published August 11, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.28%, the 83rd percentile. Fixed in telegram-desktop 2.2.0+ds-1.