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CVE Vulnerability Details :
CVE-2021-47793
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-15 Jan, 2026 | 23:25
Updated At-16 Jan, 2026 | 21:11
Rejected At-
▼CVE Numbering Authority (CNA)
Telegram Desktop 2.9.2 - Denial of Service (PoC)

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.

Affected Products
Vendor
Telegram
Product
Telegram Desktop
Versions
Affected
  • 2.9.2
Problem Types
TypeCWE IDDescription
CWECWE-770Allocation of Resources Without Limits or Throttling
Type: CWE
CWE ID: CWE-770
Description: Allocation of Resources Without Limits or Throttling
Metrics
VersionBase scoreBase severityVector
4.04.6MEDIUM
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
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 4.0
Base score: 4.6
Base severity: MEDIUM
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
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Aryan Chehreghani
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.exploit-db.com/exploits/50247
exploit
https://telegram.org
product
https://www.vulncheck.com/advisories/telegram-desktop-denial-of-service-poc
third-party-advisory
Hyperlink: https://www.exploit-db.com/exploits/50247
Resource:
exploit
Hyperlink: https://telegram.org
Resource:
product
Hyperlink: https://www.vulncheck.com/advisories/telegram-desktop-denial-of-service-poc
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.exploit-db.com/exploits/50247
exploit
Hyperlink: https://www.exploit-db.com/exploits/50247
Resource:
exploit
Details not found