{“lastseen”:”2025-09-30T16:29:43″,”description”:”Trivision………”,”published”:”2025-09-30T00:00:00″,”modified”:”2025-09-30T00:00:00″,”type”:”packetstorm”,”title”:”\ud83d\udcc4 Trivision NC-227WF Username Enumeration”,”source”:””,”references”:””,”id”:”PACKETSTORM:209989″,”bulletinFamily”:”exploit”,”cwe”:null,”cvelist”:[“CVE-2025-56764″],”sourceData”:”# CVE-2025-56764 \u2014 Trivision NC-227WF\\n \\n ## Summary\\n Trivision NC-227WF firmware 5.80 (build 20141010) login mechanism reveals whether a username exists or not by returning different error messages (\\”Unknown user\\” vs. \\”Wrong password\\”), allowing an attacker to enumerate valid usernames. Referenced CVE record has been published to the CVE List \/ NVD.\\n \\n ## Impact\\n – Username enumeration enabling targeted brute-force or credential-stuffing attacks.\\n – Increases risk of unauthorized access when combined with credential theft or weak passwords.\\n \\n ## Observed behavior \/ Example\\n – Different error messages are returned based on username validity.\\n – Example observed responses:\\n – `\\”Unknown user\\”` \u2014 username does not exist.\\n – `\\”Wrong password\\”` \u2014 username exists but password incorrect.\\n \\n ## Mitigation \/ Recommendations\\n 1. Normalize login error messages so responses do not reveal username validity.\\n 2. Implement proper authentication handling and reject weaker auth schemes where inappropriate.\\n 3. Enforce rate limiting and account lockout policies.\\n 4. Monitor and audit authentication attempts; rotate compromised credentials.\\n \\n ## References\\n – [NVD Entry](https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2025-56764) \\n – [CVE.org Entry](https:\/\/www.cve.org\/CVERecord?id=CVE-2025-56764)\\n \\n —\\n \\n # \uad8c\uace0\ubb38\\n Trivision NC-227WF \ud38c\uc6e8\uc5b4 5.80 (build 20141010)\uc758 \ub85c\uadf8\uc778 \ucc98\ub9ac\uc5d0\uc11c \uc0ac\uc6a9\uc790\uba85 \uc874\uc7ac \uc5ec\ubd80\uc5d0 \ub530\ub77c \uc11c\ub85c \ub2e4\ub978 \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4(\\”Unknown user\\” vs \\”Wrong password\\”). \uc774\ub85c \uc778\ud574 \uacf5\uaca9\uc790\ub294 \uc720\ud6a8\ud55c \uc0ac\uc6a9\uc790\uba85\uc744 \uc5f4\uac70\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uad00\ub828 CVE \ub808\ucf54\ub4dc\ub294 NVD\uc5d0 \uac8c\uc2dc\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \\n \\n ## \uc601\ud5a5\\n – \uc0ac\uc6a9\uc790\uba85 \ub178\ucd9c\ub85c \uc778\ud55c \ubb34\ucc28\ubcc4 \ub300\uc785 \uacf5\uaca9 \ubc0f \ud06c\ub9ac\ub374\uc15c \uc2a4\ud130\ud551 \uac00\ub2a5\uc131 \uc99d\uac00.\\n – \ub178\ucd9c\ub41c \uc0ac\uc6a9\uc790\uba85 + \uc57d\ud55c \ube44\ubc00\ubc88\ud638 \uc870\ud569 \uc2dc \ubb34\ub2e8 \uc811\uadfc \uc704\ud5d8 \uc99d\ub300.\\n \\n ## \uad00\ucc30\ub41c \ub3d9\uc791 \/ \uc608\uc2dc\\n – \uc0ac\uc6a9\uc790\uba85 \uc874\uc7ac \uc5ec\ubd80\uc5d0 \ub530\ub77c \ubc18\ud658\ub418\ub294 \uc624\ub958 \uba54\uc2dc\uc9c0\uac00 \ub2e4\ub984:\\n – `Unknown user` \u2014 \uacc4\uc815 \uc5c6\uc74c\\n – `Wrong password` \u2014 \uacc4\uc815 \uc874\uc7ac, \ube44\ubc00\ubc88\ud638 \ubd88\uc77c\uce58\\n \\n ## \uc644\ud654 \uad8c\uace0\\n 1. \ub85c\uadf8\uc778 \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \ud1b5\uc77c\ud558\uc5ec \uc0ac\uc6a9\uc790\uba85 \uc720\ud6a8\uc131 \ub178\ucd9c\uc744 \ub9c9\uc744 \uac83.\\n 2. \uc778\uc99d \ucc98\ub9ac \ub85c\uc9c1\uc744 \uc810\uac80\ud558\uc5ec \ubd88\ud544\uc694\ud55c \uc57d\ud55c \uc778\uc99d \ubc29\uc2dd \ud5c8\uc6a9\uc744 \ucc28\ub2e8\ud560 \uac83.\\n 3. \ub85c\uadf8\uc778 \uc2dc\ub3c4\uc5d0 \ub300\ud55c \uc18d\ub3c4 \uc81c\ud55c \ubc0f \uacc4\uc815 \uc7a0\uae08 \uc815\ucc45 \uc801\uc6a9.\\n 4. \uc778\uc99d \ub85c\uadf8 \ubaa8\ub2c8\ud130\ub9c1 \ubc0f \uc758\uc2ec\uc2a4\ub7ec\uc6b4 \uc2dc\ub3c4\uc5d0 \ub300\ud55c \uc870\uce58, \uc790\uaca9\uc99d\uba85 \uad50\uccb4.\\n \\n ## \ucc38\uace0\\n – [NVD \ub4f1\ub85d \uc815\ubcf4](https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2025-56764) \\n – [CVE.org \ub4f1\ub85d \uc815\ubcf4](https:\/\/www.cve.org\/CVERecord?id=CVE-2025-56764)”,”sourceHref”:”https:\/\/packetstorm.news\/download\/209989″,”cvss”:{“score”:6.5,”severity”:”MEDIUM”,”vector”:”CVSS:3.1\/AV:N\/AC:L\/PR:N\/UI:N\/S:U\/C:L\/I:L\/A:N”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:”https:\/\/packetstorm.news\/files\/id\/209989\/”,”category_name”:”Exploit”,”post_link”:””,”product”:””,”version”:””,”vendor”:””,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:”2025-09-30T16:29:43″,”description”:”Trivision………”,”published”:”2025-09-30T00:00:00″,”modified”:”2025-09-30T00:00:00″,”type”:”packetstorm”,”title”:”\ud83d\udcc4 Trivision NC-227WF Username Enumeration”,”source”:””,”references”:””,”id”:”PACKETSTORM:209989″,”bulletinFamily”:”exploit”,”cwe”:null,”cvelist”:[“CVE-2025-56764″],”sourceData”:”# CVE-2025-56764 \u2014 Trivision NC-227WF\\n \\n ## Summary\\n Trivision NC-227WF firmware 5.80 (build 20141010) login mechanism reveals whether a username exists…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[6,8,26,12,21,13,53,7,11,5],"class_list":["post-19715","post","type-post","status-publish","format-standard","hentry","category-category_exploit","tag-cve","tag-cvss","tag-cvss-65","tag-exploit","tag-medium","tag-news","tag-packetstorm","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n