# CVE-2021-39995: Denial of service in eCNS280 TD;eSE620X vESS

> An out-of-bounds read in Huawei network devices using OpenHpi allows attackers to cause a denial of service.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 29 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mjvc-frcm-6323

## What is CVE-2021-39995?

CVE-2021-39995 is a medium-severity denial of service vulnerability in eCNS280_TD;eSE620X vESS, published on 29 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Some Huawei products use the OpenHpi software for hardware management. A function that parses data returned by OpenHpi contains an out-of-bounds read vulnerability that could lead to a denial of service. Affected product versions include: eCNS280_TD V100R005C10; eSE620X vESS V100R001C10SPC200, V100R001C20SPC200, V200R001C00SPC300.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2021-39995?

It affects 2 products.


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

## How do I fix CVE-2021-39995?

No fix has been published for CVE-2021-39995 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-39995 being exploited?

There is no known exploitation of CVE-2021-39995 in the wild and no public exploit code.

## Other vulnerabilities in eCNS280_TD;eSE620X vESS

- [CVE-2021-22396](https://insights.sbomify.com/CVE-2021-22396/): Privilege escalation in eCNS280 TD;eSE620X vESS (high 7.8)
- [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-2021-37036](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-2021-39995 and fix it if it is affected.

What it is: CVE-2021-39995 is a medium-severity denial of service vulnerability in eCNS280_TD;eSE620X vESS, published on 29 Nov 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-2021-39995 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-2021-39995/ (Markdown: https://insights.sbomify.com/CVE-2021-39995/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-39995
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-39995
- OSV: https://osv.dev/vulnerability/CVE-2021-39995

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-39995/
Summaries are generated and may contain mistakes; the official description above is the record.