CVE-2021-30496
Published: 20 April 2021
Summary
CVE-2021-30496 is a medium-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Telegram Telegram. Its CVSS base score is 5.7 (Medium).
Operationally, ranked in the top 28.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-17417
Vulnerability details
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.…
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NOTE: the vendor's perspective is that "this behavior can't be considered a vulnerability."
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.