{"id":"CVE-2022-27255","aliases":["EUVD-2022-31764","GHSA-hcc6-7m2q-wj56"],"status":"published","title":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a...","description":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.36704,"percentile":0.9851,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2022-08-01T11:43:25Z","modified":"2026-06-17T04:36:35Z","exploits":[{"source":"pocgithub","id":"infobyte/cve-2022-27255","title":"infobyte/cve-2022-27255","date":"2022-07-06","url":"https://github.com/infobyte/cve-2022-27255"},{"source":"pocgithub","id":"stryker-project/CVE-2022-27255-checker","title":"stryker-project/CVE-2022-27255-checker","date":"2022-08-27","url":"https://github.com/stryker-project/CVE-2022-27255-checker"}],"products":[{"vendor":"realtek","product":"ecos_msdk_firmware"},{"vendor":"realtek","product":"ecos_rsdk_firmware"}],"references":[{"url":"https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://forum.defcon.org/node/241835","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-27255"},{"url":"https://source.android.com/security/bulletin/2022-06-01"},{"url":"https://github.com/advisories/GHSA-hcc6-7m2q-wj56"}],"sources":{"cve":[{"id":"CVE-2022-27255","description":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.","status":"published","published":"2022-08-01T11:43:25Z","modified":"2024-08-03T05:25:32.604Z","updated_at":"2026-11-02T14:34:34.250357Z"}],"euvd":[{"id":"EUVD-2022-31764","description":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.","status":"published","published":"2022-08-01T11:43:25Z","modified":"2024-08-03T05:25:32Z","updated_at":"2026-11-03T03:25:43.539822Z"}],"ghsa":[{"id":"GHSA-hcc6-7m2q-wj56","title":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a...","description":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.","status":"published","published":"2022-08-02T00:00:28Z","modified":"2023-01-31T05:02:00Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:48:10.613465Z"}],"nvd":[{"id":"CVE-2022-27255","description":"In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.","status":"published","published":"2022-08-01T12:15:08.357Z","modified":"2026-06-17T04:36:35.797Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:24.39467Z"}]}}