Question 1

What is CVE-2026-39042 — CVE-2026-39042?

Accepted Answer

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.

Question 2

What is the authoritative source for CVE-2026-39042?

Accepted Answer

CVE-2026-39042 (CVE-2026-39042) is catalogued in NVD + CISA KEV + FIRST EPSS and curated for EU compliance use cases by SQUR.

CVE-2026-39042CVE-2026-39042

Description

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