# CVE-2021-30321: Memory corruption in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity

> A buffer overflow in Snapdragon firmware allows attackers to execute arbitrary code or cause denial of service via crafted MBSSID scan information elements.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-v269-87cf-4phh

## What is CVE-2021-30321?

CVE-2021-30321 is a critical memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 12 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Possible buffer overflow due to lack of parameter length check during MBSSID scan IE parse in Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2021-30321?

It affects 23 products.


Products: Qualcomm Aqt1000 Firmware, Qualcomm Qca1062 Firmware, Qualcomm Qca1064 Firmware, Qualcomm Qca2066 Firmware, Qualcomm Qca6320 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Sc8280xp Firmware, Qualcomm Sd 8cx Firmware, Qualcomm Wcd9340 Firmware, Qualcomm Wcd9341 Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wcd9385 Firmware, Qualcomm Wcn3998 Firmware, Qualcomm Wcn6850 Firmware, Qualcomm Wcn6851 Firmware, Qualcomm Wcn6855 Firmware, Qualcomm Wcn6856 Firmware, Qualcomm Wsa8810 Firmware and 3 more.

## How do I fix CVE-2021-30321?

No fix has been published for CVE-2021-30321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-30321 being exploited?

There is no known exploitation of CVE-2021-30321 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Aqt1000 Firmware

- [CVE-2025-21479](https://insights.sbomify.com/CVE-2025-21479/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2025-21480](https://insights.sbomify.com/CVE-2025-21480/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2023-28562](https://insights.sbomify.com/CVE-2023-28562/): Buffer Copy Without Checking Size of Input in QESL (critical 9.8)
- [CVE-2022-40514](https://insights.sbomify.com/CVE-2022-40514/): Buffer copy without checking size of input in WLAN Firmware (critical 9.8)
- [CVE-2022-22096](https://insights.sbomify.com/CVE-2022-22096/): Memory corruption in Snapdragon Connectivity, Snapdragon Mobile (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30321 and fix it if it is affected.

What it is: CVE-2021-30321 is a critical memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 12 Nov 2021. 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-2021-30321 in the wild and no public exploit code.

Affected product: Qualcomm Aqt1000 Firmware. 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-2021-30321/ (Markdown: https://insights.sbomify.com/CVE-2021-30321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30321
- OSV: https://osv.dev/vulnerability/CVE-2021-30321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-30321/
Summaries are generated and may contain mistakes; the official description above is the record.