# Unauthenticated Denial-of-Service Vulnerability in HTTP Service in TP-Link TL-MR100, TL-MR150, TL-MR6400 and Archer MR600

CVE record · `CVE-2026-8619`

- **Identifiers:** `CVE-2026-8619`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** TPLink
- **Weakness (CWE):** [CWE-476](https://cwe.mitre.org/data/definitions/476.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md)
- **Technologies:** [TP-Link Systems Inc. TL-MR100 v3.2](https://agentprime.io/advisories/technology/tp-link-systems-inc-tl-mr100-v3-2.md) · [TP-Link Systems Inc. TL-MR150 v.3.2](https://agentprime.io/advisories/technology/tp-link-systems-inc-tl-mr150-v-3-2.md) · [TP-Link Systems Inc. TL-MR6400 v8.0](https://agentprime.io/advisories/technology/tp-link-systems-inc-tl-mr6400-v8-0.md) · [TP-Link Systems Inc Archer MR600 v2](https://agentprime.io/advisories/technology/tp-link-systems-inc-archer-mr600-v2.md)
- **Published:** 19 Aug 2026
- **Updated:** 20 Aug 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: TPLink) at 19 Aug 2026, 23:11 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: TP-Link Systems Inc.. Product: TL-MR100 v3.2.
  - affected: `before TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n` (custom)
  - Other versions: unaffected
- Vendor: TP-Link Systems Inc.. Product: TL-MR150 v.3.2.
  - affected: `before TL-MR150(EU)_V3.20_1.3.0 Build 260720 Rel.59727n` (custom)
  - Other versions: unaffected
- Vendor: TP-Link Systems Inc.. Product: TL-MR6400 v8.0.
  - affected: `before TL-MR6400(EN)_V8_1.5.0 Build 260610 Rel.67978n` (custom)
  - Other versions: unaffected
- Vendor: TP-Link Systems Inc. Product: Archer MR600 v2.
  - affected: `before Archer MR600(EU)_V2_1.10.0 Build 260618` (custom)
  - Other versions: unaffected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.1 High, CVSS 4.0: `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`, from CNA (TPLink)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0087, the 59th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 19 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-8619](https://www.cve.org/CVERecord?id=CVE-2026-8619)
- [NVD: CVE-2026-8619](https://nvd.nist.gov/vuln/detail/CVE-2026-8619)

### References from the CNA

- <https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware> (patch)
- <https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware> (patch)
- <https://www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmware> (patch)
- <https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware> (patch)
- <https://www.tp-link.com/us/support/faq/5253/> (vendor-advisory)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-8619>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-8619/>. Everything for agents: <https://agentprime.io/llms.txt>.