{"id":"CVE-2025-27591","details":"A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.","aliases":["GHSA-9mc5-7qhg-fp3w","RUSTSEC-2025-0149"],"modified":"2026-08-12T03:51:33.312768728Z","published":"2025-03-11T18:29:21.569Z","related":["openSUSE-SU-2026:10194-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27591.json","cna_assigner":"facebook"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/03/12/1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27591.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27591"},{"type":"ADVISORY","url":"https://www.facebook.com/security/advisories/cve-2025-27591"},{"type":"FIX","url":"https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/facebookincubator/below","events":[{"introduced":"0"},{"fixed":"da9382e6e3e332fd2c3195e22f34977f83f0f1f3"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:facebook:below:*:*:*:*:*:rust:*:*","extracted_events":[{"introduced":"0.0.0"},{"fixed":"0.9.0"},{"introduced":"0"}]}}],"versions":["v0.8.1","v0.8.0","v0.7.1","v0.7.0","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.0","v0.4.1","v0.4.0","v0.3.0","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27591.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N"}]}