# CVE-2020-5839: Information disclosure in Symantec Endpoint Detection And Response

> An information disclosure vulnerability in Symantec Endpoint Detection And Response allows unauthorized access to sensitive data.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8wr6-8hq7-r22h

## What is CVE-2020-5839?

CVE-2020-5839 is a high-severity vulnerability in Symantec Endpoint Detection And Response, published on 8 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Symantec Endpoint Detection And Response, prior to 4.4, may be susceptible to an information disclosure issue, which is a type of vulnerability that could potentially allow unauthorized access to data.

## Which versions are affected by CVE-2020-5839?

It affects 1 product.


Products: Symantec Endpoint Detection and Response.

## How do I fix CVE-2020-5839?

No fix has been published for CVE-2020-5839 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5839 being exploited?

There is no known exploitation of CVE-2020-5839 in the wild and no public exploit code.

Public exploit code:

- CVE-2020-5839 POC (github_poc): https://github.com/nasbench/CVE-2020-5839

## Other vulnerabilities in Symantec Endpoint Detection And Response

- [CVE-2022-37015](https://insights.sbomify.com/CVE-2022-37015/): Privilege escalation in Symantec Endpoint Detection and Response (critical 9.8)
- [CVE-2020-12593](https://insights.sbomify.com/CVE-2020-12593/): Information disclosure in Symantec Endpoint Detection & Response (SEDR) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5839 and fix it if it is affected.

What it is: CVE-2020-5839 is a high-severity vulnerability in Symantec Endpoint Detection And Response, published on 8 Jul 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-2020-5839 in the wild and no public exploit code.

Affected product: Symantec Endpoint Detection And Response. 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-2020-5839/ (Markdown: https://insights.sbomify.com/CVE-2020-5839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5839
- OSV: https://osv.dev/vulnerability/CVE-2020-5839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-5839/
Summaries are generated and may contain mistakes; the official description above is the record.