CVE-2021-27204

Name: CVE-2021-27204
Creator: NVD / NIST
Published: 2021-02-12T08:15:11.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2021-27204 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Telegram before 7.4 (212543) Stable on macOS stores the local passcode in cleartext, leading to information disclosure.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

Telegram before 7.4 (212543) Stable on macOS stores the local passcode in cleartext, leading to information disclosure.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.29%

20.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-312

Affected Software

Vendor	Product	Versions
Telegram	Telegram	< 7.4.0

References

https://www.inputzero.io/2020/12/telegram-privacy-fails-again.htmlThird Party Advisory
https://www.youtube.com/watch?v=zEt-_5b4OaAExploit, Third Party Advisory
https://www.inputzero.io/2020/12/telegram-privacy-fails-again.htmlThird Party Advisory
https://www.youtube.com/watch?v=zEt-_5b4OaAExploit, Third Party Advisory

Timeline

Published: Feb 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27204?

Telegram before 7.4 (212543) Stable on macOS stores the local passcode in cleartext, leading to information disclosure.

How severe is CVE-2021-27204?

CVE-2021-27204 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27204?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27204?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST