Viber for iOS through 29.4.0.24 fails to validate the logical screen width and height in received GIF headers, allowing attackers to crash the app. Attackers can send a crafted GIF with zero dimensions that triggers an uncaught NSInternalInconsistencyException, aborting the app with SIGABRT when opened.

CVSS Details

CVSS 4.0 Base Score: 5.3
CVSS 3.1 Base Score: 4.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

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CVSS Details

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CVE-2026-126546: Rakuten Viber Viber for iOS: Viber for iOS through 29.4.0.24 fails to validate the logical screen width and height in received GIF headers, allowing…

CVSS Details

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