Bug 2571416 (CVE-2026-126546) - CVE-2026-126546 viber: viber: Denial of Service via crafted GIF image
Summary: CVE-2026-126546 viber: viber: Denial of Service via crafted GIF image
Keywords:
Status: NEW
Alias: CVE-2026-126546
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-11 01:11 UTC by OSIDB Bzimport
Modified: 2026-11-11 04:04 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-11-11 01:11:45 UTC 
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.
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