PT-2026-45999 · Mercusys · Ac12G

Tymbark7372 · CVE-2026-36611 · Published 2026-06-03 · Updated 2026-06-03

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions Mercusys AC12G (EU) V1 version AC12G(EU) V1 200909

Description An issue exists where the device returns 128 bytes of uninitialized buffer when receiving POST requests that lack a SOAPAction header on the UPnP port 1900. This allows unauthenticated adjacent network attackers to expose internal memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-36611

Affected Products

Ac12G

References · 3

• 🔥 https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36611.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-36611 · Security Note
• https://t.me/cveNotify/165879 · Telegram Post