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Check Point Scalable Platforms sync protection bypass in NAT rules

CVE-2026-120490

3.8LowCNA
Exploited
No known exploitation
Fix
See vendor advisory
Who is exposed
Not reported
Published
Last modified
Reference
Last checked
8.38% · 95th percentile
12/100 · provisional
1 proof of concept on GitHub

Summary

Scalable Platforms (ElasticXL, Maestro, Chassis) are affected. An attacker who already has administrator access with permission to edit and install Access Control Policy and NAT rules can reach the bug over the network and use a NAT rule to redirect traffic to the Gateway's Sync interface, bypassing the built-in Sync protection, which could let them run operating system commands and write files on the Gateway with superuser privileges.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

On Scalable Platforms, an administrator with permissions to edit and install the Access Control Policy and NAT rules can create a NAT rule that redirects traffic to the Gateway's Sync interface, bypassing the built-in Sync protection. This could allow the administrator to execute operating system commands and write files on the Gateway with superuser privileges.

cve.now Index

12Pcve.now Index 12 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure3/25Reachable over the network · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity3.8/10CVSS 3.8
  • No patch5/5No fixed version listed; see vendor advisory

What would change the score

  • Would score about 67 if added to CISA KEV
  • Would score about 62 if CISA's SSVC rates exploitation active
  • Would score about 31 if advisories confirm default setups are exposed

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-120490 (Administrator with policy and NAT permissions can bypass Sync network protection on Scalable Platforms), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-120490 (entry last updated 2026-11-12):
Affected:
- checkpoint Scalable Platforms (ElasticXL, Maestro, Chassis): version range not reported
Fixed versions: none listed yet.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-120490 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-120490 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://support.checkpoint.com/results/sk/sk1000364
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-120490
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-120490"}.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • checkpoint Scalable Platforms (ElasticXL, Maestro, Chassis)

    Version range not reported

Evidence 4

Vendor advisory · 1

Establishes: Affected and fixed versions.

  1. Link

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Public exploit code · 1

Establishes: Public exploit code exists (Exploit-DB, Metasploit, Nuclei and GitHub).

  1. Exploit

Corrections

None so far.

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