# CVE-2026-46749: Weak cryptography in SINEC INS

> Weak password hashing with static salt and low iterations allows attackers to recover user passwords and gain unauthorized access to Siemens SINEC INS.

- **Severity:** Medium 5.0 (`CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-c5mx-3x5g-xmjx

## What is CVE-2026-46749?

CVE-2026-46749 is a medium-severity vulnerability in Siemens SINEC INS, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 6). The affected application uses a password hashing implementation with a static, hardcoded salt shared across all users and installations, and is configured with an insufficient number of iterations. This could allow an attacker to efficiently recover user passwords using brute-force or precomputed attacks, potentially resulting in unauthorized access.

Weakness: CWE-760 (Use of a One-Way Hash with a Predictable Salt)

## Which versions are affected by CVE-2026-46749?

It affects 1 product.


Products: Siemens Sinec Ins.

## How do I fix CVE-2026-46749?

No fix has been published for CVE-2026-46749 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-46749 being exploited?

There is no known exploitation of CVE-2026-46749 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SINEC INS

- [CVE-2022-45092](https://insights.sbomify.com/CVE-2022-45092/): Path traversal in SINEC INS (critical 9.9)
- [CVE-2024-46888](https://insights.sbomify.com/CVE-2024-46888/): Path traversal in SINEC INS (critical 9.4)
- [CVE-2024-46890](https://insights.sbomify.com/CVE-2024-46890/): Command injection in SINEC INS (critical 9.4)
- [CVE-2026-46746](https://insights.sbomify.com/CVE-2026-46746/): Command injection in SINEC INS (high 8.7)
- [CVE-2026-46748](https://insights.sbomify.com/CVE-2026-46748/): Privilege escalation in SINEC INS (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-46749 and fix it if it is affected.

What it is: CVE-2026-46749 is a medium-severity vulnerability in Siemens SINEC INS, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-46749 in the wild and no public exploit code.

Affected product: Siemens SINEC INS. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-46749/ (Markdown: https://insights.sbomify.com/CVE-2026-46749/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-46749
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-46749
- OSV: https://osv.dev/vulnerability/CVE-2026-46749

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-46749/
Summaries are generated and may contain mistakes; the official description above is the record.