CVSS 3.1
9.6 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCVE-2026-62948
Critical (9.6) in openwrt openwrt. EPSS 0.6% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-79, CWE-117, CWE-150
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openwrt:openwrt
References
- https://github.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048a
- https://github.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3a
- https://github.com/openwrt/odhcpd/pull/404
- https://github.com/openwrt/openwrt/releases/tag/v25.12.5
- https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f