{"id":"CVE-2025-6273","aliases":["DEBIAN-CVE-2025-6273","EUVD-2025-18694","GHSA-frwp-9m3q-pjc8","UBUNTU-CVE-2025-6273"],"status":"disputed","title":"WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00235,"percentile":0.14577,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2025-06-19T18:31:06Z","modified":"2026-10-28T02:30:40Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.32-1","1.0.33-1","1.0.34+dsfg+~cs1.0.32-1","1.0.34+dsfg2+~cs1.0.32-1","1.0.34+dsfg2+~cs1.0.32-2","1.0.34+dsfg2+~cs1.0.32-3","1.0.34+dsfg2+~cs1.0.32-4","1.0.34-1","1.0.36+dfsg+~cs1.0.36-1","1.0.36+dfsg+~cs1.0.36-2","1.0.41+dfsg+~cs1.0.39-1","1.0.41+dfsg+~cs1.0.39-2"]},{"source":"osv","ecosystem":"Debian:13","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36+dfsg+~cs1.0.36-2","1.0.41+dfsg+~cs1.0.39-1","1.0.41+dfsg+~cs1.0.39-2"]},{"source":"osv","ecosystem":"Debian:14","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36+dfsg+~cs1.0.36-2","1.0.41+dfsg+~cs1.0.39-1","1.0.41+dfsg+~cs1.0.39-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.11-1","1.0.12-1","1.0.13-1","1.0.13-1build1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20-1","1.0.24-1","1.0.24-2","1.0.25-1","1.0.26-1","1.0.27-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.33-1","1.0.34-1","1.0.34+dsfg2+~cs1.0.32-1ubuntu1","1.0.34+dsfg2+~cs1.0.32-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.34+dsfg2+~cs1.0.32-1ubuntu2","1.0.36+dfsg+~cs1.0.36-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36+dfsg+~cs1.0.36-2ubuntu1","1.0.36+dfsg+~cs1.0.36-2ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"wabt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36+dfsg+~cs1.0.36-2ubuntu1"]}],"products":[{"vendor":"webassembly","product":"wabt"}],"references":[{"url":"https://vuldb.com/?id.313277","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.313277","tags":["signature","permissions-required","Permissions Required","VDB Entry","report"]},{"url":"https://vuldb.com/?submit.593010","tags":["third-party-advisory","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://github.com/WebAssembly/wabt/issues/2574","tags":["issue-tracking","exploit","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://github.com/user-attachments/files/19529411/wabt_crash.txt","tags":["exploit","Exploit","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6273","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-frwp-9m3q-pjc8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6273.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-6273","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-6273","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-6273","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-6273","title":"WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"disputed","published":"2025-06-19T18:31:06.692Z","modified":"2025-06-23T19:30:37.748Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium","assessor":"cna"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","level":"low","assessor":"cna"},{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","level":"low","assessor":"cna"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:32:40.419293Z"}],"euvd":[{"id":"EUVD-2025-18694","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"published","published":"2025-06-19T18:31:06Z","modified":"2025-06-23T19:30:37Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"medium"}],"updated_at":"2026-11-02T20:32:17.4539Z"}],"ghsa":[{"id":"GHSA-frwp-9m3q-pjc8","title":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This...","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"published","published":"2025-06-19T21:31:19Z","modified":"2025-06-19T21:31:25Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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":"low"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:02:45.735544Z"}],"nvd":[{"id":"CVE-2025-6273","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"disputed","published":"2025-06-19T19:15:21.8Z","modified":"2026-06-17T10:01:30.267Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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":"low","assessor":"secondary"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"2.0","score":1.7,"vector":"AV:L/AC:L/Au:S/C:N/I:N/A:P","level":"low","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:11:13.247441Z"}],"osv":[{"id":"CVE-2025-6273","title":"WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"published","published":"2025-06-19T18:31:06.692Z","modified":"2026-10-28T02:30:40.734363713Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:44:51.851511Z"},{"id":"DEBIAN-CVE-2025-6273","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"published","published":"2025-06-19T19:15:21.8Z","modified":"2026-09-01T20:04:35.446213674Z","cvss":[{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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":"low"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-6273","description":"A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\".","status":"published","published":"2025-06-19T19:15:00Z","modified":"2026-10-17T12:57:28.851374304Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"},{"version":"4.0","score":1.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","level":"low"}],"updated_at":"2026-11-02T16:55:50.817402Z"}]}}