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.
Published: 2026-01-15
Score: 4.6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 30 Jan 2026 01:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:telegram:telegram_desktop:2.9.2:*:*:*:*:*:*:*

Fri, 16 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 16 Jan 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Telegram
Telegram telegram
Telegram telegram Desktop
Telegram Desktop
Telegram Desktop telegram Desktop
Vendors & Products Telegram
Telegram telegram
Telegram telegram Desktop
Telegram Desktop
Telegram Desktop telegram Desktop

Thu, 15 Jan 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Title Telegram Desktop 2.9.2 - Denial of Service (PoC)
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 4.6, 'vector': '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'}


Subscriptions

Telegram Telegram Telegram Desktop
Telegram Desktop Telegram Desktop
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-05T01:28:35.818Z

Reserved: 2026-01-14T14:39:44.738Z

Link: CVE-2021-47793

cve-icon Vulnrichment

Updated: 2026-01-16T15:52:45.929Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-16T00:16:23.207

Modified: 2026-01-30T00:56:05.853

Link: CVE-2021-47793

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-16T13:42:31Z

Weaknesses