CVE-2026-61695 Wire Swift - Denial of Service

Wire Swift runtime < 6.4.1 and < 7.0.0-alpha04 contains a denial of service caused by accepting negative length in LENGTH_DELIMITED field inside unknown START_GROUP, letting attackers crash the process remotely without authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.58% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-129

Vendor fix

Update to versions 6.4.1 or 7.0.0-alpha04 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs