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CVE-2021-41093

30
FAUCET Score

CVE-2021-41093 is a critical vulnerability affecting Wire, an open-source secure messenger, where an attacker with an old but valid access token could take over an account by changing the associated email address. This flaw has been patched in Wire version 3.86, which implemented a new endpoint requiring an additional authentication cookie. With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.86CPE matchmatch criteria
cpe:2.3:a:wire:wire:*:*:*:*:*:iphone_os:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 57th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / wireapp/wire-ios/commit/b0e7bb3b13dd8212032cb46e32edf701694687c7
PatchThird Party Advisory
github.com / wireapp/wire-ios/security/advisories/GHSA-6f4c-phfj-m255
Third Party Advisory
github.com / wireapp/wire-ios-sync-engine/security/advisories/GHSA-w727-5f74-49xj
Broken Link
github.com / wireapp/wire-ios-transport/security/advisories/GHSA-p354-6r3m-g4xr
Broken Link
github.com / wireapp/wire-server/security/advisories/GHSA-9rm2-w6pq-333m
Third Party Advisory