Vulnerability Details : CVE-2021-30496
** DISPUTED ** 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."
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2021-30496
Probability of exploitation activity in the next 30 days: 0.12%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 45 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-30496
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:N/A:P |
6.8
|
2.9
|
[email protected] |
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
[email protected] |
References for CVE-2021-30496
-
https://t.me/joinchat/bJ9cnUosVh03ZTI0
Vendor Advisory
-
https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31
Exploit;Third Party Advisory
Products affected by CVE-2021-30496
- cpe:2.3:a:telegram:telegram:7.6.2:*:*:*:*:iphone_os:*:*