# CVE-2020-5928: Cross-site request forgery in BIG-IP ASM

> Attackers can bypass CSRF protection in BIG-IP ASM Configuration utility by reusing tokens, potentially performing unauthorized actions.

- **Severity:** Low 3.1 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Aug 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-4q76-mx33-p22x

## What is CVE-2020-5928?

CVE-2020-5928 is a low-severity vulnerability in F5 Big-Ip Application Security Manager, published on 26 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

In versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, BIG-IP ASM Configuration utility CSRF protection token can be reused multiple times.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2020-5928?

It affects 1 product.


Products: F5 Big-Ip Application Security Manager.

## How do I fix CVE-2020-5928?

No fix has been published for CVE-2020-5928 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5928 being exploited?

There is no known exploitation of CVE-2020-5928 in the wild and no public exploit code.

## Other vulnerabilities in F5 Big-Ip Application Security Manager

- [CVE-2019-6665](https://insights.sbomify.com/CVE-2019-6665/): Other in BIG-IP ASM (critical 9.4)
- [CVE-2019-6650](https://insights.sbomify.com/CVE-2019-6650/): Information disclosure in BIG-IP ASM (critical 9.1)
- [CVE-2025-24326](https://insights.sbomify.com/CVE-2025-24326/): BIG-IP Advanced WAF/ASM BADoS vulnerability (high 8.9)
- [CVE-2025-55669](https://insights.sbomify.com/CVE-2025-55669/): BIG-IP HTTP/2 vulnerability (high 8.7)
- [CVE-2009-4420](https://insights.sbomify.com/CVE-2009-4420/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5928 and fix it if it is affected.

What it is: CVE-2020-5928 is a low-severity vulnerability in F5 Big-Ip Application Security Manager, published on 26 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-5928 in the wild and no public exploit code.

Affected product: F5 Big-Ip Application Security Manager. 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-2020-5928/ (Markdown: https://insights.sbomify.com/CVE-2020-5928/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5928
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5928
- OSV: https://osv.dev/vulnerability/CVE-2020-5928

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-5928/
Summaries are generated and may contain mistakes; the official description above is the record.