# CVE-2022-26839: Delta Electronics DIAEnergie Incorrect Default Permissions

> Incorrect default permissions in Delta DIAEnergie allow attackers to plant or replace executable files, potentially leading to code execution.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Mar 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-jf5q-mjg7-6xrp

## What is CVE-2022-26839?

CVE-2022-26839 is a high-severity vulnerability in Deltaww Diaenergie, published on 29 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Delta Electronics DIAEnergie (All versions prior to 1.8.02.004) is vulnerable to an incorrect default permission in the DIAEnergie application, which may allow an attacker to plant new files (such as DLLs) or replace existing executable files.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2022-26839?

It affects 1 product.


Products: Deltaww Diaenergie.

## How do I fix CVE-2022-26839?

No fix has been published for CVE-2022-26839 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-26839 being exploited?

There is no known exploitation of CVE-2022-26839 in the wild and no public exploit code.

## Other vulnerabilities in Deltaww Diaenergie

- [CVE-2024-4547](https://insights.sbomify.com/CVE-2024-4547/): Delta Electronics DIAEnergie Unauthenticated SQL Injection (critical 9.8)
- [CVE-2024-4548](https://insights.sbomify.com/CVE-2024-4548/): Delta Electronics DIAEnergie SQL Injection (critical 9.8)
- [CVE-2022-43774](https://insights.sbomify.com/CVE-2022-43774/): SQL injection in Delta Electronics DIAEnergie (critical 9.8)
- [CVE-2022-43775](https://insights.sbomify.com/CVE-2022-43775/): SQL injection in Delta Electronics DIAEnergie (critical 9.8)
- [CVE-2022-3214](https://insights.sbomify.com/CVE-2022-3214/): Delta Electronics DIAEnergy Use of Hard-coded Credentials (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-26839 and fix it if it is affected.

What it is: CVE-2022-26839 is a high-severity vulnerability in Deltaww Diaenergie, published on 29 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-26839 in the wild and no public exploit code.

Affected product: Deltaww Diaenergie. 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-2022-26839/ (Markdown: https://insights.sbomify.com/CVE-2022-26839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-26839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-26839
- OSV: https://osv.dev/vulnerability/CVE-2022-26839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-26839/
Summaries are generated and may contain mistakes; the official description above is the record.