CVE-2026-39042
An issue in MikroTIk (SIA Mikrotikls, Latvia) RouterOS 7.21.x before v.7.21.4 and 7.22.x before v.7.22.2 allows a remote attacker to cause a denial of service via the unflatten() function in libumsg.so.
- Score
- CVSS 3.1 7.5 High
- Status
- Deferred - cve@mitre.org
- Published
- 2026-07-13
- Last modified
- 2026-07-14
- Weaknesses
- CWE-190
References
- https://mikrotik.com/supportsec
- https://zakpatrik.cz/blog/finding-an-integer-overflow-in-mikrotik-routeros-core-ipc-library
