# CVE-2021-27658: exacqVision Enterprise Manager CSS

> Attackers can inject malicious scripts into web pages served to other users, potentially leading to session hijacking or code execution.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:** 24 Jun 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-2r29-995v-5xhv

## What is CVE-2021-27658?

CVE-2021-27658 is a medium-severity cross-site scripting vulnerability in Johnson Controls exacqVision Enterprise Manager, published on 24 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

exacqVision Enterprise Manager 20.12 does not sufficiently validate, filter, escape, and/or encode user-controllable input before it is placed in output that is used as a web page that is served to other users.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-27658?

It affects 1 product.


Products: Johnsoncontrols Exacqvision Enterprise Manager.

## How do I fix CVE-2021-27658?

No fix has been published for CVE-2021-27658 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27658 being exploited?

There is no known exploitation of CVE-2021-27658 in the wild and no public exploit code.

## Other vulnerabilities in Johnson Controls exacqVision Enterprise Manager

- [CVE-2020-9047](https://insights.sbomify.com/CVE-2020-9047/): exacqVision Software - Improper Verification of Cryptographic Signature (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27658 and fix it if it is affected.

What it is: CVE-2021-27658 is a medium-severity cross-site scripting vulnerability in Johnson Controls exacqVision Enterprise Manager, published on 24 Jun 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-2021-27658 in the wild and no public exploit code.

Affected product: Johnson Controls exacqVision Enterprise 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-2021-27658/ (Markdown: https://insights.sbomify.com/CVE-2021-27658/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27658
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27658
- OSV: https://osv.dev/vulnerability/CVE-2021-27658

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27658/
Summaries are generated and may contain mistakes; the official description above is the record.