What is GHSA-p5h9-77xr-72r8?

GHSA-p5h9-77xr-72r8 is a security advisory published by GitHub Security Advisories with High severity. An issue in MikroTIk (SIA Mikrotikls, Latvia) RouterOS 7.21.x before v.7.21.4 and 7.22.x before v...

Which CVE IDs does GHSA-p5h9-77xr-72r8 cover?

GHSA-p5h9-77xr-72r8 covers the following CVE IDs: CVE-2026-39042. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-p5h9-77xr-72r8?

GHSA-p5h9-77xr-72r8 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-p5h9-77xr-72r8HighCVSS 7.5

An issue in MikroTIk (SIA Mikrotikls, Latvia) RouterOS 7.21.x before v.7.21.4 and 7.22.x before v...

Vendor

GitHub Security Advisories

Published

July 14, 2026

Last Modified

July 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-39042 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-39042
https://mikrotik.com/supportsec
https://zakpatrik.cz/blog/finding-an-integer-overflow-in-mikrotik-routeros-core-ipc-library
https://github.com/advisories/GHSA-p5h9-77xr-72r8