# CVE-2024-27662: Null dereference in n/a

> Attackers can cause a Denial of Service on D-Link DIR-823G routers via crafted input triggering a null-pointer dereference.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Feb 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-v9x5-9rj9-j343

## What is CVE-2024-27662?

CVE-2024-27662 is a medium-severity vulnerability in Dlink Dir-823g Firmware, published on 29 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a Null-pointer dereferences in sub_4110f4(). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Weakness: CWE-755 (Improper Handling of Exceptional Conditions), CWE-395 (Use of NullPointerException Catch to Detect NULL Pointer Dereference)

## Which versions are affected by CVE-2024-27662?

It affects 1 product.


Products: Dlink Dir-823g Firmware.

## How do I fix CVE-2024-27662?

No fix has been published for CVE-2024-27662 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-27662 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-27662 exists.

## Other vulnerabilities in Dlink Dir-823g Firmware

- [CVE-2023-43235](https://insights.sbomify.com/CVE-2023-43235/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-43241](https://insights.sbomify.com/CVE-2023-43241/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26612](https://insights.sbomify.com/CVE-2023-26612/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-26613](https://insights.sbomify.com/CVE-2023-26613/): Command injection in n/a (critical 9.8)
- [CVE-2023-26616](https://insights.sbomify.com/CVE-2023-26616/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-27662 and fix it if it is affected.

What it is: CVE-2024-27662 is a medium-severity vulnerability in Dlink Dir-823g Firmware, published on 29 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-27662 exists.

Affected product: Dlink Dir-823g 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-2024-27662/ (Markdown: https://insights.sbomify.com/CVE-2024-27662/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-27662
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-27662
- OSV: https://osv.dev/vulnerability/CVE-2024-27662

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-27662/
Summaries are generated and may contain mistakes; the official description above is the record.