{"id":"CVE-2025-46806","aliases":["DEBIAN-CVE-2025-46806","EUVD-2025-16646","GHSA-9pc8-3wwf-wg5j","MGASA-2026-0227","UBUNTU-CVE-2025-46806","openSUSE-SU-2025:15194-1"],"status":"published","title":"Misaligned Memory Accesses in `is_openvpn_protocol()`","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0047,"percentile":0.41094,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-823"],"published":"2025-06-02T00:00:00Z","modified":"2026-10-28T02:31:00Z","fixes":[{"ecosystem":"Debian:14","package":"sslh","fixed_in":["2.3.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-1","2.3.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-1"}]}],"versions":["2.1.4-1"]},{"source":"osv","ecosystem":"Mageia:9","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-1.1.mga9"}]}],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.17-2","1.17-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18-1","1.18-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18-1","1.20-1","1.20-1+deb11u1build0.20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20-1","1.20-1+deb11u1build0.22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20-1.1","1.22c-1","1.22c-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-1build1","2.1.4-1ubuntu0.25.10.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-1build1","2.1.4-1build2","2.1.4-1ubuntu0.26.04.1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"sslh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.4-1.1"}]}],"bundled":2}],"products":[{"vendor":"https://github.com/yrutschle/sslh/releases/tag/v2.2.4","product":"sslh"},{"vendor":"yrutschle","product":"sslh"}],"references":[{"url":"https://github.com/yrutschle/sslh/releases/tag/v2.2.4","tags":["web","report"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-46806","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46806","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9pc8-3wwf-wg5j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46806.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-46806","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0227.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=34345","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/7OYJB5CGFUQDS3Z3Y5EBCTJLLCFP33SZ/","tags":["web"]},{"url":"https://www.openwall.com/lists/oss-security/2025/06/13/1","tags":["web"]},{"url":"https://ubuntu.com/security/notices/USN-8360-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-46806","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-46806","tags":["report"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1243120","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/7OYJB5CGFUQDS3Z3Y5EBCTJLLCFP33SZ/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-46806","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-46807","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-46806","title":"Misaligned Memory Accesses in `is_openvpn_protocol()`","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T12:11:20.267Z","modified":"2025-06-02T16:27:11.3Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-823"],"updated_at":"2026-11-02T14:32:36.706507Z"}],"euvd":[{"id":"EUVD-2025-16646","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T12:11:20Z","modified":"2025-06-02T16:27:11Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:32:32.485503Z"}],"ghsa":[{"id":"GHSA-9pc8-3wwf-wg5j","title":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some...","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T15:31:23Z","modified":"2025-06-02T15:31:31Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-823"],"updated_at":"2026-11-02T15:02:32.017383Z"}],"nvd":[{"id":"CVE-2025-46806","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T13:15:21.6Z","modified":"2026-06-17T09:26:57.877Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-823"],"updated_at":"2026-11-02T14:11:10.143444Z"}],"osv":[{"id":"CVE-2025-46806","title":"Misaligned Memory Accesses in `is_openvpn_protocol()`","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T12:11:20.267Z","modified":"2026-10-28T02:31:00.024433196Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-823"],"updated_at":"2026-11-02T15:44:49.707645Z"},{"id":"DEBIAN-CVE-2025-46806","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T13:15:21.6Z","modified":"2026-09-01T20:04:29.255369382Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:47.378563Z"},{"id":"UBUNTU-CVE-2025-46806","description":"A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.","status":"published","published":"2025-06-02T13:15:00Z","modified":"2026-10-17T12:56:52.137345095Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:50.31802Z"},{"id":"MGASA-2026-0227","title":"Updated sslh packages fix security vulnerabilities","description":"CVE-2025-46806, A Use of Out-of-range Pointer Offset vulnerability in\nsslh leads to denial of service on some architectures\nCVE-2025-46807, A Allocation of Resources Without Limits or Throttling\nvulnerability in sslh allows attackers to easily exhaust the file\ndescriptors in sslh and deny legitimate users service.\nCVE-2025-52936, Improper Link Resolution Before File Access ('Link\nFollowing') vulnerability in yrutschle sslh\n","status":"published","published":"2026-06-23T06:04:47Z","modified":"2026-06-23T06:15:04.827663066Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2025:15194-1","title":"sslh-2.2.4-1.1 on GA media","description":"These are all security issues fixed in the sslh-2.2.4-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-06-02T00:00:00Z","modified":"2026-03-23T04:53:28.367334Z","updated_at":"2026-11-02T16:58:37.399567Z"}]}}