CVE-2026-35049: CWE-20: Improper Input Validation in wireapp wire-ios
wire-ios is an iOS client for the Wire secure messaging application. Prior to version 4.16.0, upon receiving a crafted malicious Proteus external message with an encrypted payload that is shorter than 16 bytes, the Wire iOS client crashes. The crash is triggered automatically after message receival with no user interaction. Since the malicious message persists in the conversation, the app enters a crash loop on relaunch and cannot be reopened until the local state is wiped. This issue has been fixed with version 4.16.0 which introduces the missing length check and is available via the App Store. No known workarounds are available.
AI Analysis
Technical Summary
CVE-2026-35049 is an input validation vulnerability (CWE-20) in wire-ios, the iOS client for the Wire secure messaging app. Versions prior to 4.16.0 do not properly check the length of an encrypted payload in Proteus external messages. If the payload is shorter than 16 bytes, the app crashes automatically upon receiving the message, triggering a persistent crash loop on relaunch due to the malicious message remaining in the conversation. This vulnerability results in a denial of service condition. The issue was fixed in version 4.16.0 by introducing the missing length check.
Potential Impact
The vulnerability causes a denial of service by crashing the Wire iOS client automatically upon receipt of a crafted message, with no user interaction required. The app cannot be reopened normally due to a crash loop until the local state is wiped, disrupting user access to the application. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
This vulnerability is fixed in Wire iOS version 4.16.0, which is available via the App Store. Users should update to version 4.16.0 or later to remediate the issue. No workarounds are available. Since this is a client-side app, updating the app is the recommended and only effective mitigation.
CVE-2026-35049: CWE-20: Improper Input Validation in wireapp wire-ios
Description
wire-ios is an iOS client for the Wire secure messaging application. Prior to version 4.16.0, upon receiving a crafted malicious Proteus external message with an encrypted payload that is shorter than 16 bytes, the Wire iOS client crashes. The crash is triggered automatically after message receival with no user interaction. Since the malicious message persists in the conversation, the app enters a crash loop on relaunch and cannot be reopened until the local state is wiped. This issue has been fixed with version 4.16.0 which introduces the missing length check and is available via the App Store. No known workarounds are available.
CVSS v3.1
Score 6.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35049 is an input validation vulnerability (CWE-20) in wire-ios, the iOS client for the Wire secure messaging app. Versions prior to 4.16.0 do not properly check the length of an encrypted payload in Proteus external messages. If the payload is shorter than 16 bytes, the app crashes automatically upon receiving the message, triggering a persistent crash loop on relaunch due to the malicious message remaining in the conversation. This vulnerability results in a denial of service condition. The issue was fixed in version 4.16.0 by introducing the missing length check.
Potential Impact
The vulnerability causes a denial of service by crashing the Wire iOS client automatically upon receipt of a crafted message, with no user interaction required. The app cannot be reopened normally due to a crash loop until the local state is wiped, disrupting user access to the application. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
This vulnerability is fixed in Wire iOS version 4.16.0, which is available via the App Store. Users should update to version 4.16.0 or later to remediate the issue. No workarounds are available. Since this is a client-side app, updating the app is the recommended and only effective mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-31T21:06:06.429Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1f348ce29bf47b50fa1fef
Added to database: 6/2/2026, 7:52:44 PM
Last enriched: 6/2/2026, 8:04:46 PM
Last updated: 6/3/2026, 5:08:42 AM
Views: 4
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