# CVE-2025-27043: Buffer Copy Without Checking Size of Input in Video

> Attacker can execute arbitrary code or escalate privileges via memory corruption in Qualcomm Snapdragon video firmware.

- **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:** Yes
- **Published:** 8 Jul 2025
- **Updated:** 8 Jul 2025
- **Also known as:** 3935643, A-409047487, ASB-A-409047487, GHSA-jx9j-66hw-3jh5

## What is CVE-2025-27043?

CVE-2025-27043 is a high-severity memory corruption vulnerability in Qualcomm Ar8035 Firmware, published on 8 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory corruption while processing manipulated payload in video firmware.

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

## Which versions are affected by CVE-2025-27043?

It affects 206 products.


Products: Qualcomm Ar8035 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Flight Rb5 5g Firmware, Qualcomm Immersive Home 3210 Firmware, Qualcomm Immersive Home 326 Firmware, Qualcomm Ipq5424 Firmware, Qualcomm Ipq8070a Firmware, Qualcomm Ipq8071a Firmware, Qualcomm Ipq8072a Firmware, Qualcomm Ipq8074a Firmware, Qualcomm Ipq8076 Firmware, Qualcomm Ipq8076a Firmware, Qualcomm Ipq8078 Firmware, Qualcomm Ipq8078a Firmware, Qualcomm Ipq8173 Firmware, Qualcomm Ipq8174 Firmware and 186 more.

## How do I fix CVE-2025-27043?

Apply the vendor's patch.

## Is CVE-2025-27043 being exploited?

There is no known exploitation of CVE-2025-27043 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Ar8035 Firmware

- [CVE-2023-33106](https://insights.sbomify.com/CVE-2023-33106/): Qualcomm Multiple Chipsets Use of Out-of-Range Pointer Offset (high 8.4, exploited in the wild)
- [CVE-2024-45569](https://insights.sbomify.com/CVE-2024-45569/): Improper Validation of Array Index in WLAN Host Communication (critical 9.8)
- [CVE-2024-21473](https://insights.sbomify.com/CVE-2024-21473/): Improper Input Validation in WIN SON (critical 9.8)
- [CVE-2023-28582](https://insights.sbomify.com/CVE-2023-28582/): Buffer Copy Without Checking Size of Input in Data Modem (critical 9.8)
- [CVE-2023-43552](https://insights.sbomify.com/CVE-2023-43552/): Use After Free in WLAN Host Communication (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27043 and fix it if it is affected.

What it is: CVE-2025-27043 is a high-severity memory corruption vulnerability in Qualcomm Ar8035 Firmware, published on 8 Jul 2025. 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-2025-27043 in the wild and no public exploit code.

Affected product: Qualcomm Ar8035 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-2025-27043/ (Markdown: https://insights.sbomify.com/CVE-2025-27043/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27043
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27043
- OSV: https://osv.dev/vulnerability/CVE-2025-27043

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-27043/
Summaries are generated and may contain mistakes; the official description above is the record.