# CVE-2021-22396: Privilege escalation in eCNS280 TD;eSE620X vESS

> A local attacker can exploit improper privilege management to access specific files and escalate privileges on Huawei network devices.

- **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:** 2 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-rg9j-p47f-47fq

## What is CVE-2021-22396?

CVE-2021-22396 is a high-severity vulnerability in eCNS280_TD;eSE620X vESS, published on 2 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

There is a privilege escalation vulnerability in some Huawei products. Due to improper privilege management, a local attacker with common privilege may access some specific files in the affected products. Successful exploit will cause privilege escalation.Affected product versions include:eCNS280_TD V100R005C00,V100R005C10;eSE620X vESS V100R001C10SPC200,V100R001C20SPC200.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2021-22396?

It affects 2 products.


Products: Huawei Ecns280 Td Firmware, Huawei Ese620x Vess Firmware.

## How do I fix CVE-2021-22396?

No fix has been published for CVE-2021-22396 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22396 being exploited?

There is no known exploitation of CVE-2021-22396 in the wild and no public exploit code.

## Other vulnerabilities in eCNS280_TD;eSE620X vESS

- [CVE-2021-22363](https://insights.sbomify.com/CVE-2021-22363/): Denial of service in eCNS280 TD (high 7.5)
- [CVE-2021-40007](https://insights.sbomify.com/CVE-2021-40007/): Information disclosure in eCNS280 TD (medium 6.5)
- [CVE-2021-39995](https://insights.sbomify.com/CVE-2021-39995/): Denial of service in eCNS280 TD;eSE620X vESS (medium 6.5)
- [CVE-2021-37036](https://insights.sbomify.com/CVE-2021-37036/): Information disclosure in FusionCompute;eCNS280 TD (medium 5.5)
- [CVE-2021-22378](https://insights.sbomify.com/CVE-2021-22378/): Race condition in eCNS280 TD (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22396 and fix it if it is affected.

What it is: CVE-2021-22396 is a high-severity vulnerability in eCNS280_TD;eSE620X vESS, published on 2 Aug 2021. 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-2021-22396 in the wild and no public exploit code.

Affected product: eCNS280_TD;eSE620X vESS. 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-2021-22396/ (Markdown: https://insights.sbomify.com/CVE-2021-22396/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22396
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22396
- OSV: https://osv.dev/vulnerability/CVE-2021-22396

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-22396/
Summaries are generated and may contain mistakes; the official description above is the record.