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CVE-2026-62948

9.6 · CRITICAL

OpenWrt is a Linux operating system targeting embedded devices.

Published Jul 15, 2026CWE-79EPSS 0.58%

Overview

CVE-2026-62948 is a critical-severity vulnerability. It was published on July 15, 2026 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.

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

GitHubgithub.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048aGitHubgithub.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3aGitHubgithub.com/openwrt/odhcpd/pull/404GitHubgithub.com/openwrt/openwrt/releases/tag/v25.12.5GitHubgithub.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535fGitHubgithub.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-62948?

CVE-2026-62948 is a critical-severity vulnerability. It was published on July 15, 2026 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2026-62948?

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-62948?

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-2026-62948?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-62948 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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