{"id":"CVE-2023-26151","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-26151","generatedAt":"2026-10-28T02:10:22.808Z","title":"Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.","description":"Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.","published":"2023-10-03T05:15:51.000Z","lastModified":"2026-06-17T05:42:48.000Z","status":"Modified","sourceIdentifier":"report@snyk.io","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400","CWE-835"],"affected":["freeopcua/opcua-asyncio"],"epss":{"score":0.01175,"percentile":0.67342,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8","tags":["Exploit","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262","tags":["Patch"],"source":"report@snyk.io"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/issues/1013","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/pull/1039","tags":["Patch"],"source":"report@snyk.io"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96","tags":["Product","Release Notes"],"source":"report@snyk.io"},{"url":"https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673709","tags":["Exploit","Patch","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://gist.github.com/artfire52/1540b234350795e0ecb4d672608dbec8","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/commit/f6603daa34a93a658f0e176cb0b9ee5a6643b262","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/issues/1013","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/pull/1039","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96","tags":["Product","Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673709","tags":["Exploit","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26151","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}