# CVE-2016-15058: Hirschmann HiLCOS Classic Platform Password Exposure via SNMP

> Attackers can sniff SNMP traffic to recover plaintext administrative credentials, enabling unauthorized access to Hirschmann switches.

- **Severity:** High 8.6 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Apr 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-fj6r-jjmq-57gw

## What is CVE-2016-15058?

CVE-2016-15058 is a high-severity vulnerability in Belden Hirschmann HiLCOS Classic Platform, published on 3 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Hirschmann HiLCOS Classic Platform switches Classic L2E, L2P, L3E, L3P versions prior to 09.0.06 and Classic L2B prior to 05.3.07 contain a credential exposure vulnerability where user passwords are synchronized with SNMPv1/v2 community strings and transmitted in plaintext when the feature is enabled. Attackers with local network access can sniff SNMP traffic or extract configuration data to recover plaintext credentials and gain unauthorized administrative access to the switches.

Weakness: CWE-257 (Storing Passwords in a Recoverable Format)

## Which versions are affected by CVE-2016-15058?


## How do I fix CVE-2016-15058?

No fix has been published for CVE-2016-15058 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-15058 being exploited?

There is no known exploitation of CVE-2016-15058 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-15058 and fix it if it is affected.

What it is: CVE-2016-15058 is a high-severity vulnerability in Belden Hirschmann HiLCOS Classic Platform, published on 3 Apr 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-2016-15058 in the wild and no public exploit code.

Affected product: Belden Hirschmann HiLCOS Classic Platform. 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-2016-15058/ (Markdown: https://insights.sbomify.com/CVE-2016-15058/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-15058
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-15058
- OSV: https://osv.dev/vulnerability/CVE-2016-15058

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-15058/
Summaries are generated and may contain mistakes; the official description above is the record.