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VULNERABILITIES

CVE-2021-30496 Details

Description

The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that "this behavior can't be considered a vulnerability."

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.7 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CNA: CISA-ADPCVSS-B:5.7 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31 CVEExploitThird Party Advisory
https://t.me/joinchat/bJ9cnUosVh03ZTI0 CVEVendor Advisory
https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31 [email protected]ExploitThird Party Advisory
https://t.me/joinchat/bJ9cnUosVh03ZTI0 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]
CWE-121Stack-based Buffer OverflowCISA-ADP

Affected Products

ProductVersions
telegram telegram
7.6.2

CPE

  • cpe:2.3:a:telegram:telegram:7.6.2:*:*:*:*:iphone_os:*:*

Remediation

  • No remediation found in references.

Change History

14 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-30496
NVD Published Date:
Apr 20, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-30496 Details - Not Deferred