CVE-2021-27204 json
Telegram before 7.4 (212543) Stable on macOS stores the local passcode in cleartext, leading to information disclosure.
published 2021-02-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13969
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
Telegram before 7.4 (212543) Stable on macOS stores the local passcode in cleartext, leading to information disclosure.
Patch / fix
- telegram telegram 7.4.0
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- youtube.com https://www.youtube.com/watch?v=zEt-_5b4OaA referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-312 Cleartext Storage of Sensitive Information
References
-
youtube.com
/watch?v=zEt-_5b4OaA
exploit, third-party-advisory
-
inputzero.io
/2020/12/telegram-privacy-fails-again.html
third-party-advisory
Sources
- CVE List CVE-2021-27204
- NVD CVE-2021-27204
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