Vulnerability Details CVE-2026-62947
OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, the cgi-download handler in cgi-io authorizes the requested path against the caller's ubus session file ACL before canonicalization, and rpcd session.c uses fnmatch() without FNM_PATHNAME, allowing traversal such as an allowed wildcard prefix followed by ../ to read root-readable files including /etc/shadow. This vulnerability is fixed in 25.12.5.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 32.7%
CVSS Severity
CVSS v3 Score 4.9
Products affected by CVE-2026-62947
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cpe:2.3:o:openwrt:openwrt:-
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cpe:2.3:o:openwrt:openwrt:15.05.1
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cpe:2.3:o:openwrt:openwrt:17.01.0
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cpe:2.3:o:openwrt:openwrt:17.01.1
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cpe:2.3:o:openwrt:openwrt:17.01.2
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cpe:2.3:o:openwrt:openwrt:17.01.3
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cpe:2.3:o:openwrt:openwrt:17.01.4
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cpe:2.3:o:openwrt:openwrt:17.01.5
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cpe:2.3:o:openwrt:openwrt:17.01.6
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cpe:2.3:o:openwrt:openwrt:17.01.7
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cpe:2.3:o:openwrt:openwrt:18.06.0
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cpe:2.3:o:openwrt:openwrt:18.06.1
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cpe:2.3:o:openwrt:openwrt:18.06.2
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cpe:2.3:o:openwrt:openwrt:18.06.3
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cpe:2.3:o:openwrt:openwrt:18.06.4
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cpe:2.3:o:openwrt:openwrt:18.06.5
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cpe:2.3:o:openwrt:openwrt:18.06.6
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cpe:2.3:o:openwrt:openwrt:18.06.7
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cpe:2.3:o:openwrt:openwrt:18.06.8
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cpe:2.3:o:openwrt:openwrt:18.06.9
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cpe:2.3:o:openwrt:openwrt:19.07.0
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cpe:2.3:o:openwrt:openwrt:19.07.1
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cpe:2.3:o:openwrt:openwrt:19.07.10
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cpe:2.3:o:openwrt:openwrt:19.07.2
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cpe:2.3:o:openwrt:openwrt:19.07.3
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cpe:2.3:o:openwrt:openwrt:19.07.4
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cpe:2.3:o:openwrt:openwrt:19.07.5
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cpe:2.3:o:openwrt:openwrt:19.07.6
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cpe:2.3:o:openwrt:openwrt:19.07.7
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cpe:2.3:o:openwrt:openwrt:19.07.8
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cpe:2.3:o:openwrt:openwrt:19.07.9
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cpe:2.3:o:openwrt:openwrt:21.02
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cpe:2.3:o:openwrt:openwrt:21.02.0
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cpe:2.3:o:openwrt:openwrt:21.02.1
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cpe:2.3:o:openwrt:openwrt:21.02.2
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cpe:2.3:o:openwrt:openwrt:21.02.3
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cpe:2.3:o:openwrt:openwrt:21.02.4
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cpe:2.3:o:openwrt:openwrt:21.02.5
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cpe:2.3:o:openwrt:openwrt:21.02.6
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cpe:2.3:o:openwrt:openwrt:21.02.7
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cpe:2.3:o:openwrt:openwrt:22.03.0
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cpe:2.3:o:openwrt:openwrt:22.03.1
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cpe:2.3:o:openwrt:openwrt:22.03.2
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cpe:2.3:o:openwrt:openwrt:22.03.3
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cpe:2.3:o:openwrt:openwrt:22.03.4
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cpe:2.3:o:openwrt:openwrt:22.03.5
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cpe:2.3:o:openwrt:openwrt:22.03.6
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cpe:2.3:o:openwrt:openwrt:22.03.7
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cpe:2.3:o:openwrt:openwrt:23.05.0
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cpe:2.3:o:openwrt:openwrt:23.05.1
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cpe:2.3:o:openwrt:openwrt:23.05.2
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cpe:2.3:o:openwrt:openwrt:23.05.3
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cpe:2.3:o:openwrt:openwrt:23.05.4
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cpe:2.3:o:openwrt:openwrt:23.05.5
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cpe:2.3:o:openwrt:openwrt:23.05.6
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cpe:2.3:o:openwrt:openwrt:24.10.0
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cpe:2.3:o:openwrt:openwrt:24.10.1
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cpe:2.3:o:openwrt:openwrt:24.10.2
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cpe:2.3:o:openwrt:openwrt:24.10.3
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cpe:2.3:o:openwrt:openwrt:24.10.4
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cpe:2.3:o:openwrt:openwrt:24.10.5
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cpe:2.3:o:openwrt:openwrt:24.10.6
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cpe:2.3:o:openwrt:openwrt:25.12.0
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cpe:2.3:o:openwrt:openwrt:25.12.1
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cpe:2.3:o:openwrt:openwrt:25.12.2
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cpe:2.3:o:openwrt:openwrt:25.12.3
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cpe:2.3:o:openwrt:openwrt:25.12.4