CVE-2021-47793
Telegram Desktop 2.9.2 - Denial of Service (PoC)
- State
- Published
- Severity
- 4.6 Medium
- Published
- Jan 15, 2026
- Updated
- Mar 5, 2026
- Reserved
- Jan 14, 2026
Description
Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.6 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
Telegram DesktopTelegram |
|
References
- ExploitDB-50247exploit
- Official Telegram Homepageproduct
- VulnCheck Advisory: Telegram Desktop 2.9.2 - Denial of Service (PoC)third-party-advisory
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