VulnSocial

CVE-2026-39042

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-190

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-29: 110-29
Full discourse1 post
  • Mario Clep 🇦🇷@marioclep

    1) A mitad de año, CVE-2026-39042 (CVSS 7.5): un integer overflow en libumsg permitía reiniciar el equipo de forma remota y sin autenticación. Afectaba 7.21.x antes de 7.21.4 y 7.22.x antes de 7.22.2. Fue el aviso más tranquilo del año.

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