{"id":"CVE-2021-31540","aliases":["EUVD-2021-18438","GHSA-8h36-wvg6-2pj9"],"status":"published","title":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions...","description":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00389,"percentile":0.33446,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2021-04-23T16:10:17Z","modified":"2026-06-17T03:51:58Z","products":[{"vendor":"wowza","product":"streaming_engine"}],"references":[{"url":"https://www.wowza.com/products/streaming-engine","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.gruppotim.it/redteam","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.wowza.com/docs/wowza-streaming-engine-4-8-12-release-notes","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31540"},{"url":"https://github.com/advisories/GHSA-8h36-wvg6-2pj9"}],"sources":{"cve":[{"id":"CVE-2021-31540","description":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.","status":"published","published":"2021-04-23T16:10:17Z","modified":"2024-08-03T23:03:33.46Z","updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18438","description":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.","status":"published","published":"2021-04-23T16:10:17Z","modified":"2024-08-03T23:03:33Z","updated_at":"2026-11-03T03:24:38.977347Z"}],"ghsa":[{"id":"GHSA-8h36-wvg6-2pj9","title":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions...","description":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.","status":"published","published":"2022-05-24T17:48:21Z","modified":"2023-01-29T05:07:21Z","cwes":["CWE-732"],"updated_at":"2026-11-02T14:46:10.15423Z"}],"nvd":[{"id":"CVE-2021-31540","description":"Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.","status":"published","published":"2021-04-23T17:15:08.363Z","modified":"2026-06-17T03:51:58.61Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}