Is CVE-2026-75118 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75118 being exploited in the wild.

How severe is CVE-2026-75118?

Informational severity, with a CVSS score of 8.7, published 28 August 2026.

Which products and versions are affected?

TP-Link Tl-Mr100 V3.20 < 1.3.0 Build 260609.

Is there a fix for CVE-2026-75118?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-75118 attacked?

It is attacked from the adjacent network.

Am I affected by CVE-2026-75118?

Check whether you run TP-Link Tl-Mr100 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75118: TP-Link TL-MR100 pre-authentication stack buffer overflow in http_gdpr_decrypt

Q: Is there a fix for CVE-2026-75118?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-75118 attacked?

It is attacked from the adjacent network.

Q: Am I affected by CVE-2026-75118?

Check whether you run TP-Link Tl-Mr100 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75118 · Severity: info · CVSS 8.7 · Published 2026-08-28

The TL-MR100 is a 4G LTE router used to provide internet connectivity in homes and offices. A pre-authentication buffer overflow vulnerability in its web management interface allows an attacker with local network access to crash the device or potentially execute arbitrary code without logging in, compromising the router's availability and potentially enabling a foothold for further network attacks.

Vendors: TP-Link.

Quick answers

Is CVE-2026-75118 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75118 being exploited in the wild.
How severe is CVE-2026-75118?: Informational severity, with a CVSS score of 8.7, published 28 August 2026.
Which products and versions are affected?: TP-Link Tl-Mr100 V3.20 < 1.3.0 Build 260609.
Is there a fix for CVE-2026-75118?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-75118 attacked?: It is attacked from the adjacent network.
Am I affected by CVE-2026-75118?: Check whether you run TP-Link Tl-Mr100 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the http_gdpr_decrypt function within the TL-MR100's httpd process due to insufficient bounds checking when processing encrypted requests to the /cgi/login endpoint. The vulnerability is pre-authentication, requiring only adjacent network access to the router's web management interface; no valid credentials are needed. An attacker can craft malicious encrypted requests that overwrite saved control-flow data on the stack, leading to denial of service (service crash) or arbitrary code execution in the context of the httpd process. TP-Link released firmware version 1.3.0 Build 260609 or later to address this issue.

Affected products

TP-Link TL-MR100 V3.20 < 1.3.0 Build 260609

Timeline

2026-08-28: disclosed

References

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