# CVE-2020-3158: Cisco Smart Software Manager On-Prem Static Default Credential Vulnerability

> Unauthenticated attackers can use static default credentials to gain high-privileged read and write access to system configuration data.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Feb 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-qvcr-mg85-mjgg

## What is CVE-2020-3158?

CVE-2020-3158 is a critical vulnerability in Cisco Smart Software Manager On-Prem, published on 19 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the High Availability (HA) service of Cisco Smart Software Manager On-Prem could allow an unauthenticated, remote attacker to access a sensitive part of the system with a high-privileged account. The vulnerability is due to a system account that has a default and static password and is not under the control of the system administrator. An attacker could exploit this vulnerability by using this default account to connect to the affected system. A successful exploit could allow the attacker to obtain read and write access to system data, including the configuration of an affected device. The attacker would gain access to a sensitive portion of the system, but the attacker would not have full administrative rights to control the device.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2020-3158?

It affects 1 product.


Products: Cisco Smart Software Manager On-Prem.

## How do I fix CVE-2020-3158?

No fix has been published for CVE-2020-3158 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3158 being exploited?

There is no known exploitation of CVE-2020-3158 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Smart Software Manager On-Prem

- [CVE-2024-20419](https://insights.sbomify.com/CVE-2024-20419/): Auth bypass in Cisco Smart Software Manager On-Prem (critical 10.0)
- [CVE-2026-20160](https://insights.sbomify.com/CVE-2026-20160/): Cisco Smart Software Manager On-Prem Arbitrary Command Execution Vulnerability (critical 9.8)
- [CVE-2020-3443](https://insights.sbomify.com/CVE-2020-3443/): Cisco Smart Software Manager On-Prem Privilege Escalation Vulnerability (high 8.8)
- [CVE-2019-16029](https://insights.sbomify.com/CVE-2019-16029/): Cisco Smart Software Manager On-Prem Web Interface Denial of Service Vulnerability (high 8.2)
- [CVE-2021-1219](https://insights.sbomify.com/CVE-2021-1219/): Cisco Smart Software Manager Satellite Static Credential Vulnerability (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3158 and fix it if it is affected.

What it is: CVE-2020-3158 is a critical vulnerability in Cisco Smart Software Manager On-Prem, published on 19 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3158 in the wild and no public exploit code.

Affected product: Cisco Smart Software Manager On-Prem. 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-2020-3158/ (Markdown: https://insights.sbomify.com/CVE-2020-3158/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3158
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3158
- OSV: https://osv.dev/vulnerability/CVE-2020-3158

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3158/
Summaries are generated and may contain mistakes; the official description above is the record.