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CriticalVulnerabilityCVE-2026-86574updated 27 Oct 2026, 10:17 UTC

JP1/Base has a memory overflow flaw that may allow full system takeover

A flaw in the JP1/Base software lets data write past the memory space it should stay in. An attacker who finds it could potentially crash the software or run their own commands on the machine.

Fix availableOfficial source
SeverityCriticalCVSS 9.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?YesJP1/Base 12-50-54 or later · since 27 Oct 2026
How sure is this?Official sourceBacked by an official source

What happened

A heap-based buffer overflow exists in JP1/Base, where input is written beyond the bounds of an allocated heap buffer. The exact trigger and attack vector are not described in the available material.

Why it is dangerous: A buffer overflow can crash the affected service or let an attacker run code with the same rights as the software. Organisations running JP1/Base for IT operations management are at risk.

Are you affected?

You are affected if you run JP1/Base versions from 11-00 up to, but not including, 12-50-54.

JP1/Base from 11-00 before 12-50-54

What to do

  1. Check your installed JP1/Base version and confirm whether it is between 11-00 and 12-50-53
  2. Update JP1/Base to version 12-50-54 or later
  3. Restrict network access to JP1/Base services until the update is applied

Timeline

  1. 27 Oct 2026, 10:16 UTC
    Publicly disclosed
  2. 27 Oct 2026, 10:16 UTC
    Reported by NVD · NVD
  3. 27 Oct 2026, 10:17 UTC
    Picked up by Zero Radar

Sources 1 report, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-86574
CVSS
9.8 / 10
EPSS
0.5% chance of exploitation within 30 days
Disclosed
27 Oct 2026, 10:16 UTC
On Zero Radar
27 Oct 2026, 10:17 UTC (1 min after disclosure)
Last change
27 Oct 2026, 10:17 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

JP1/Base has a memory overflow flaw that may allow full system takeover · Zero Radar