What’s Vulnerable › Vulnerabilities

CVE-2021-32666: Asset DoS vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-03 · updated 2026-06-17
• Weakness: CWE-20

Description

wire-ios is the iOS version of Wire, an open-source secure messaging app. In wire-ios versions 3.8.0 and prior, a vulnerability exists that can cause a denial of service between users. If a user has an invalid assetID for their profile picture and it contains the " character, it will cause the iOS client to crash. The vulnerability is patched in wire-ios version 3.8.1.

Affected products

• wireapp wire-ios: before 3.81 — fixed in 3.81

How to fix

Upgrade to a fixed version: wireapp wire-ios 3.81. Check the vendor advisory for mitigations.

References

• https://github.com/wireapp/wire-ios-data-model/commit/35af3f632085f51a2ce7f608fdaeffd1a69ad89f
• https://github.com/wireapp/wire-ios/security/advisories/GHSA-2x9x-vh27-h4rv
• https://github.com/wireapp/wire-ios-data-model/commit/35af3f632085f51a2ce7f608fdaeffd1a69ad89f
• https://github.com/wireapp/wire-ios/security/advisories/GHSA-2x9x-vh27-h4rv

Get alerted when CVE-2021-32666 or the next vulnerability affects your stack