VULNERABILITY INTELLIGENCE

CVE-2021-47793

CVSS score4.6 MEDIUM
EPSS probability0.50%
CISA KEVNot currently listed
Published2026-01-16
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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.

Weakness classification

  • CWE-770: Allocation of Resources Without Limits or Throttling

Primary references