{"id":"CVE-2025-55315","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-55315","generatedAt":"2026-11-02T15:02:29.554Z","title":"Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.","description":"Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.","published":"2025-10-14T17:15:45.000Z","lastModified":"2026-10-18T21:10:00.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L"},"cwe":["CWE-444"],"affected":["microsoft/asp.net core","microsoft/visual studio 2022"],"epss":{"score":0.66526,"percentile":0.99284,"date":"2026-11-01","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2026-04-06","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52492,"kind":"exploit","title":"ASP.net  8.0.10 - Bypass","url":"https://www.exploit-db.com/exploits/52492","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/52492.py","file":"exploits/multiple/webapps/52492.py","published":"2026-04-06","added":"2026-04-06","updated":"2026-04-06","author":"Mohammed Idrees Banyamer","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2025-55315"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 66.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-55315","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."}