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CVE-2026-12339

Published Aug 10, 2026 CWE-22 EPSS 0.34% (27th pctl)

Overview

CVE-2026-12339 is a known-severity vulnerability. It was published on August 10, 2026.

Technical Description

A Zip Slip vulnerability in the WebUI ISP

Upgrade functionality allows arbitrary file write via a crafted archive

containing directory traversal sequences. An authenticated administrator may

overwrite arbitrary files on the system.Successful

exploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Ref www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware Ref www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware Ref www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware Ref www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmware Ref www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware Ref www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware Ref www.tp-link.com/en/support/faq/5237/ Ref www.tp-link.com/kr/support/download/tl-mr100/v3.20/#Firmware

Frequently Asked Questions

What is CVE-2026-12339?

CVE-2026-12339 is a known-severity vulnerability. It was published on August 10, 2026.

How severe is CVE-2026-12339?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-12339?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-12339?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-12339 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.
Code Review

AI-driven PR review catches vulnerable dependencies before they ship.
HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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