# CVE-2021-34766: Cisco Smart Software Manager Privilege Escalation Vulnerability

> An authenticated attacker can elevate privileges to create, read, update, or delete records and settings in Cisco Smart Software Manager On-Prem.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2021
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-8mp4-67gg-gvgw

## What is CVE-2021-34766?

CVE-2021-34766 is a medium-severity vulnerability in Cisco Smart Software Manager On-Prem, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the web UI of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges and create, read, update, or delete records and settings in multiple functions. This vulnerability is due to insufficient authorization of the System User and System Operator role capabilities. An attacker could exploit this vulnerability by directly accessing a web resource. A successful exploit could allow the attacker to create, read, update, or delete records and settings in multiple functions without the necessary permissions on the web UI.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2021-34766?

It affects 1 product.


Products: Cisco Smart Software Manager On-Prem.

## How do I fix CVE-2021-34766?

No fix has been published for CVE-2021-34766 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34766 being exploited?

There is no known exploitation of CVE-2021-34766 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-2020-3158](https://insights.sbomify.com/CVE-2020-3158/): Cisco Smart Software Manager On-Prem Static Default Credential 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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34766 and fix it if it is affected.

What it is: CVE-2021-34766 is a medium-severity vulnerability in Cisco Smart Software Manager On-Prem, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-34766 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-2021-34766/ (Markdown: https://insights.sbomify.com/CVE-2021-34766/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34766
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34766
- OSV: https://osv.dev/vulnerability/CVE-2021-34766

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-34766/
Summaries are generated and may contain mistakes; the official description above is the record.