CVE-2026-78862

mediumpriority · track · 0OT risk · elevatedEPSS 0.003 · 18 %ileRU

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.26% (18th) EPSS

CVSS 6.8 · medium

Is it mine?

1 products

Who says so?

1 sources

fstec_bdu

EPSS · scored 2026-10-27

An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the UART serial interface on the printed circuit board (PCB)

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.8mediumAV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 0.9 · impact 5.9

v3.16.2mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

Products and version ranges known to be affected.

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 2026-10-05modified 2026-10-07

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.