{"id":"CVE-2019-7656","aliases":["EUVD-2019-17188","GHSA-6pq8-9hcx-5r62"],"status":"published","title":"A privilege escalation vulnerability in Wowza Streaming Engine 4.7.7 and 4.7.8 allows any...","description":"A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00451,"percentile":0.39442,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-276","CWE-732"],"published":"2020-01-29T15:21:50Z","modified":"2026-06-17T02:40:49Z","products":[{"vendor":"wowza","product":"streaming_engine"}],"references":[{"url":"https://www.wowza.com/pricing/installer","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-7656-PrivEscal-Wowza","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.wowza.com/docs/wowza-streaming-engine-4-8-5-release-notes","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/main/wowza-streaming-engine/CVE-2019-7656.txt","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-7656"},{"url":"https://raw.githubusercontent.com/WowzaMediaSystems/public_cve/master/wowza-streaming-engine/CVE-2019-7656.txt"},{"url":"https://github.com/advisories/GHSA-6pq8-9hcx-5r62"}],"sources":{"cve":[{"id":"CVE-2019-7656","description":"A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.","status":"published","published":"2020-01-29T15:21:50Z","modified":"2024-08-04T20:54:28.335Z","updated_at":"2026-11-02T14:32:22.854093Z"}],"euvd":[{"id":"EUVD-2019-17188","description":"A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.","status":"published","published":"2020-01-29T15:21:50Z","modified":"2024-08-04T20:54:28Z","updated_at":"2026-11-03T03:06:45.52347Z"}],"ghsa":[{"id":"GHSA-6pq8-9hcx-5r62","title":"A privilege escalation vulnerability in Wowza Streaming Engine 4.7.7 and 4.7.8 allows any...","description":"A privilege escalation vulnerability in Wowza Streaming Engine 4.7.7 and 4.7.8 allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse.","status":"published","published":"2022-05-24T17:07:40Z","modified":"2023-01-29T05:01:14Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-276","CWE-732"],"updated_at":"2026-11-02T14:44:45.930691Z"}],"nvd":[{"id":"CVE-2019-7656","description":"A privilege escalation vulnerability in Wowza Streaming Engine 4.8.0 and earlier allows any unprivileged Linux user to escalate privileges to root. The installer sets too relaxed permissions on /usr/local/WowzaStreamingEngine/bin/* core program files. By injecting a payload into one of those files, it will run with the same privileges as the Wowza server, root. For example, /usr/local/WowzaStreamingEngine/bin/tune.sh could be replaced with a Trojan horse. This issue was resolved in Wowza Streaming Engine 4.8.5.","status":"published","published":"2020-01-29T16:15:11.99Z","modified":"2026-06-17T02:40:49.097Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:05:43.875329Z"}]}}