# CVE-2026-8619: Null dereference in Archer MR600 v2

> Remote attackers can crash the HTTP service on TP-Link routers via a null pointer dereference, causing temporary denial of service.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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:** 19 Aug 2026
- **Updated:** 20 Aug 2026
- **Also known as:** GHSA-vp4h-929p-f8gq

## What is CVE-2026-8619?

CVE-2026-8619 is a high-severity vulnerability in TP-Link Systems Inc Archer MR600 v2, published on 19 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An
unauthenticated denial-of-service vulnerability was identified in TP-Link TL-MR100 v3.2, TL-MR150 v3.2, TL-MR6400 v8.0 and Archer MR600 v2, due to improper handling of exceptional request conditions
that may lead to a NULL pointer dereference. 
A remote attacker on an adjacent network can send a specially crated
HTTP request to trigger a crash of the HTTP service process.

Successful
exploitation may cause the HTTP service to crash, making the web management
interface and HTTP-dependent functionality temporarily unavailable.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2026-8619?

It affects 4 products.


Products: Tp-Link Archer Mr600 Firmware, Tp-Link Tl-Mr100 Firmware, Tp-Link Tl-Mr150 Firmware, Tp-Link Tl-Mr6400 Firmware.

## How do I fix CVE-2026-8619?

No fix has been published for CVE-2026-8619 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8619 being exploited?

There is no known exploitation of CVE-2026-8619 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link Systems Inc Archer MR600 v2

- [CVE-2025-14756](https://insights.sbomify.com/CVE-2025-14756/): Authenticated Command Injection Vulnerability in Archer MR600 (high 8.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8619 and fix it if it is affected.

What it is: CVE-2026-8619 is a high-severity vulnerability in TP-Link Systems Inc Archer MR600 v2, published on 19 Aug 2026. 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-2026-8619 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc Archer MR600 v2. 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-2026-8619/ (Markdown: https://insights.sbomify.com/CVE-2026-8619/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8619
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8619
- OSV: https://osv.dev/vulnerability/CVE-2026-8619

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8619/
Summaries are generated and may contain mistakes; the official description above is the record.