CVE-2020-17448: Telegram Desktop through 2.1.13 allows a spoofed file type to bypass the Dangerous File Type Execution protect

Q: How do I fix CVE-2020-17448?

telegram desktop: upgrade to newer than 2.1.13. Exact commands for each OS are on this page.

Q: Is CVE-2020-17448 being exploited?

CVE-2020-17448 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-17448 affect?

CVE-2020-17448 affects telegram desktop. Severity is high (CVSS 7.8). 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.

This month

HIGH 7.8UPGRADE

CVE-2020-17448 is a high-severity flaw (CVSS 7.8) affecting telegram desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-863
Published	2020-08-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: telegram

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-11 17:15 UTCPublished CVE record published
2026-06-17 02:58 UTCUpdated Record last modified

telegram telegram desktop UPGRADE

Affected: <= 2.1.13

Fixed in: newer than 2.1.13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy telegram-desktop || rpm -q telegram-desktop || telegram-desktop --version

2. UPGRADE to newer than 2.1.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade telegram-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade telegram-desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-17448?

telegram desktop: upgrade to newer than 2.1.13. Exact commands for each OS are on this page.

Is CVE-2020-17448 being exploited?

CVE-2020-17448 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-17448 affect?

CVE-2020-17448 affects telegram desktop. Severity is high (CVSS 7.8). 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.

How urgent is CVE-2020-17448?

Priority 48/100. High severity

Software pages

Telegram vulnerabilities

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References

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