{"id":"CVE-2025-42599","kind":"vulnerability","aliases":["CVE-2025-42599"],"related":[],"title":"qualitia active\\! mail: Active! mail 6 BuildInfo: 6.60.05008561 and earlier contains a stack-based buffer overflow vulnerability","description":"Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"Qualitia Active! Mail, a Japanese enterprise mail product, has a stack-based buffer overflow that a remote attacker can trigger with a crafted request. The overflow can allow arbitrary code execution or a denial of service, and CISA lists it as actively exploited.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2025-04-28T00:00:00+00:00","products":[{"name":"Qualitia Active! Mail","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"qualitia active\\! mail","fixed":["6.60.05008562"],"affected":"< 6.60.05008562","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","mail-server","other","qualitia-active-mail","self-hosted"],"not_affected_if":["not-running-qualitia-active-mail"],"how_to_check":null,"fix":"Apply the vendor's mitigation per CISA guidance; discontinue use if no mitigation is available. Exact fixed version: unknown","status":"open","published_at":"2025-04-18T04:15:30+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:48:43+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-23T20:48:43Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor's mitigation per CISA guidance; discontinue use if no mitigation is available. Exact fixed version: unknown","reach":"internet","summary":"Qualitia Active! Mail, a Japanese enterprise mail product, has a stack-based buffer overflow that a remote attacker can trigger with a crafted request. The overflow can allow arbitrary code execution or a denial of service, and CISA lists it as actively exploited.","category":"other","who_cares":["qualitia-active-mail","mail-server","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs arbitrary code on the mail server without logging in.","analyst_note":"Find the vendor advisory (Qualitia) for affected versions, fixed version and mitigation steps; the sources give none of these.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["not-running-qualitia-active-mail"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000441,"input_tokens":2565,"output_tokens":368,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':131C '-2025':20A,23A '-42599':21A,24A '22':130C '6':6A '6.60.05008561':8A 'action':121C 'activ':2A,4A,38B,44B,85B,88C 'active':26A,29A 'allow':71B,99C 'appli':122C 'applic':128C 'arbitrari':72B,106C 'attack':61B,103C 'base':15A,55B,94C 'bod':129C 'buffer':16A,56B,95C 'buildinfo':7A 'cisa':81B,119C 'cloud':134C 'code':73B 'contain':11A,90C 'craft':66B,117C 'cve':19A,22A 'denial':77B,111C 'denial-of-servic':110C 'discontinu':137C 'earlier':10A 'enterpris':48B 'execut':74B,105C 'exploit':31B,86B 'follow':127C 'guidanc':132C 'host':42B 'instruct':126C 'japanes':47B 'list':82B 'mail':3A,5A,27A,30A,33B,39B,45B,49B,89C 'mail-serv':32B 'mitig':123C,143C 'overflow':17A,57B,69B,96C 'per':124C 'product':50B,141C 'qualitia':1A,25A,28A,37B,43B,87C 'qualitia-active-mail':36B 'remot':60B,101C 'request':67B,118C 'requir':120C 'self':41B 'self-host':40B 'server':34B 'servic':79B,113C,135C 'special':116C 'stack':14A,54B,93C 'stack-bas':13A,53B,92C 'trigger':63B,108C 'unauthent':102C 'unavail':145C 'use':138C 'vendor':125C 'via':114C 'vulner':18A,97C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2025-04-18T04:15:30+00:00","kev":{"dateAdded":"2025-04-28","dueDate":"2025-05-19","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2025-42599","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-42599","severity":null,"published_at":"2025-04-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T17:39:55+00:00","note":null},{"source":"nvd","external_id":"CVE-2025-42599","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-42599","severity":null,"published_at":"2025-04-18T04:15:30+00:00","modified_at":"2026-09-24T13:10:00+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}