{"cve":{"cve_id":"CVE-2026-105133","is_kev":true,"kev_date_added":"2026-10-14","kev_vendor_project":"Ahsay","kev_product":"AhsayCBS","kev_vulnerability_name":"Ahsay AhsayCBS Improper Authentication Vulnerability","kev_short_description":"Ahsay AhsayCBS contains an improper authentication vulnerability that could allow a remote attacker to bypass authentication via manipulation of the random parameter in the API component’s checkSysPwd function. This vulnerability can be chained with CVE-2026-105134.","kev_required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","kev_due_date":"2026-10-17","kev_known_ransomware":false,"kev_notes":"https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-105133","kev_cwes":["CWE-287"],"epss_score":0.00666,"epss_percentile":0.50776,"epss_as_of":"2026-10-15","description":"A vulnerability was detected in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This affects the function checkSysPwd of the file com/ahsay/obs/api/ApiStructsAction.java of the component API. Performing a manipulation of the argument random results in improper authentication. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to mitigate this issue. It is recommended to upgrade the affected component. The initial patch did not fix the security vulnerability properly. An update of the CVE entry to reflect this became necessary.","published_at":"2026-10-04T05:15:14.561000Z","last_modified_at":"2026-10-15T13:47:06.283000Z","cvss_v3_score":7.3,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:H/RL:O/RC:C","cvss_v3_severity":"HIGH","cvss_v4_score":6.9,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A","cvss_v4_severity":"MEDIUM","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-287"],"nvd_references":["https://vuldb.com/vuln/413350","https://vuldb.com/vuln/413350/cti","https://vuldb.com/cve/CVE-2026-105133","https://vuldb.com/submit/942688","https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update","https://www.huntress.com/blog/ahsaycbs-flaws-exploit"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-10-04T08:32:05.944751Z","updated_at":"2026-10-26T20:43:00.670415Z"},"effective_severity":"MEDIUM","badges":["kev","poc","news"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"L","value_label":"Low"},{"metric":"E","name":"E","value":"H","value_label":"High"},{"metric":"RL","name":"RL","value":"O","value_label":"O"},{"metric":"RC","name":"RC","value":"C","value_label":"Changed"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"},{"metric":"E","name":"E","value":"A","value_label":"Adjacent"}]},"affected":[{"vendor_slug":"ahsay","vendor_name":"ahsay","product_slug":"ahsaycbs","product_name":"ahsaycbs","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:ahsay:ahsaycbs:*:*:*:*:*:*:*:*"},{"vendor_slug":"ahsay","vendor_name":"ahsay","product_slug":"cloud-backup-suite","product_name":"cloud_backup_suite","version_start":null,"version_start_inclusive":null,"version_end":"10.3.4","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:ahsay:cloud_backup_suite:*:*:*:*:*:*:*:*"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-105133.yaml","title":"AhsayCBS - JSON API Authentication Bypass","author":"alex","disclosed_at":null}],"news":[{"id":2585,"source":"The Hacker News","url":"https://thehackernews.com/2026/10/ahsaycbs-flaws-exploited-to-deploy-web.html","title":"AhsayCBS Flaws Exploited to Deploy Web Shells Get New Fixes After Incomplete Patches","summary":"Singapore-based Ahsay Backup has released security updates to address two security flaws in AhsayCBS that have been exploited by bad actors to drop web shells and XMRig cryptocurrency miners.\n\nThe vulnerabilities in question are CVE-2026-105133 and CVE-2026-105134, which could be chained to sidestep authentication and execute arbitrary commands on affected systems.\n\nIn a report published earlier","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhH_5A4EPZ4VVdF4dve5fMe4BwreUmtWCJQrgMiBdiZyoFInoZK_nO6ouOwLMCyyQPrXWE4_n3NE39b4C2UQi-G4uE3ufyv7A9IEYEp9O3ggTu7AyDRzOqwVqhLjISLvOTasPiAcdFafFtL7B5uoKtm8GPeFFxrKDupGCoqZJ2o88sUmaGbjKk6E3sJgIKD/s1600/backup.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-10-15T06:43:08Z","fetched_at":"2026-10-15T09:30:21.475879Z","trending_score":0.02812792359995342,"cve_ids":["CVE-2026-105133"]},{"id":2482,"source":"The Hacker News","url":"https://thehackernews.com/2026/10/attackers-exploit-ahsaycbs-flaws-to.html","title":"Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge","summary":"Threat actors have been observed exploiting two recently disclosed flaws in the AhsayCBS backup utility to seize control of affected devices and deploy web shells and XMRig cryptocurrency miners.\n\nDetails of the flaws are below -\n\n\n  CVE-2026-105133 (CVSS v4 score: 5.5) - An improper authentication vulnerability in the checkSysPwd() function in the \"com/ahsay/obs/api/ApiStructsAction.java\"","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMpbMY9pFBnt6TekKFIlEqpeqQoPBjBuhu8rYuYtU7ce5P3LTFKwlv_F_BUDzfuuMu0gRU645YStocoUQnNtS11MoEIRrfxrgPZtShsFgr8YH1VYTtjPr2l6aHPFDBYPHJKLT-fa-KqaHGSJHeiDPKzUgA12IJH5zhAHpMnoGZc5Qsz9sJhCOB_3gYHQar/s1600/edge.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-10-09T12:47:26Z","fetched_at":"2026-10-09T14:50:29.522886Z","trending_score":0.003289872758016197,"cve_ids":["CVE-2026-105133"]}],"references":[{"url":"https://vuldb.com/vuln/413350","source_type":"MISC","tags":[]},{"url":"https://vuldb.com/vuln/413350/cti","source_type":"MISC","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-105133","source_type":"MISC","tags":[]},{"url":"https://vuldb.com/submit/942688","source_type":"MISC","tags":[]},{"url":"https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update","source_type":"MISC","tags":["patch"]},{"url":"https://www.huntress.com/blog/ahsaycbs-flaws-exploit","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-10-04T05:15:14.561000Z","label":"CVE published","source":null},{"type":"first_article","at":"2026-10-09T12:47:26Z","label":"First news coverage","source":"The Hacker News"},{"type":"cisa_reported","at":"2026-10-14T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-10-21T17:22:35.665776Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-10-26T20:43:00.670415Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-10-26T20:43:00.670415Z","label":"CVSS score revised","source":"cvelistv5"}]}