{"id":"CVE-2023-6548","kind":"vulnerability","aliases":["CVE-2023-6548"],"related":[],"title":"Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker…","description":"Citrix NetScaler ADC and NetScaler Gateway contain a code injection vulnerability that allows for authenticated remote code execution on the management interface with access to NSIP, CLIP, or SNIP.\n\nCISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","summary":"Citrix NetScaler ADC and NetScaler Gateway have a code injection flaw in the management interface that lets an authenticated user run code remotely. CISA lists it as actively exploited in the wild.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2024-01-17T00:00:00+00:00","products":[{"name":"Citrix NetScaler ADC and NetScaler Gateway","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"citrix netscaler application delivery controller","fixed":["12.1-55.302"],"affected":">= 12.1, < 12.1-55.302","ecosystem":"vendor"},{"name":"citrix netscaler application delivery controller","fixed":["13.0-92.21"],"affected":">= 13.0, < 13.0-92.21","ecosystem":"vendor"},{"name":"citrix netscaler application delivery controller","fixed":["13.1-37.176"],"affected":">= 13.1, < 13.1-37.176","ecosystem":"vendor"},{"name":"citrix netscaler application delivery controller","fixed":["13.1-51.15"],"affected":">= 13.1, < 13.1-51.15","ecosystem":"vendor"},{"name":"citrix netscaler application delivery controller","fixed":["14.1-12.35"],"affected":">= 14.1, < 14.1-12.35","ecosystem":"vendor"},{"name":"citrix netscaler gateway","fixed":["13.0-92.21"],"affected":">= 13.0, < 13.0-92.21","ecosystem":"vendor"},{"name":"citrix netscaler gateway","fixed":["13.1-51.15"],"affected":">= 13.1, < 13.1-51.15","ecosystem":"vendor"},{"name":"citrix netscaler gateway","fixed":["14.1-12.35"],"affected":">= 14.1, < 14.1-12.35","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["citrix","exploited","gateway","infrastructure","netscaler","self-hosted"],"not_affected_if":["managed-hosting","no-management-access-exposed"],"how_to_check":null,"fix":"Apply the mitigation or fixed build from Citrix per vendor instructions, or stop using the product if no mitigation exists (CISA required action).","status":"open","published_at":"2024-01-17T00:00:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T21:02:29+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:02:29Z","model":"claude-haiku-5-5","output":{"fix":"Apply the mitigation or fixed build from Citrix per vendor instructions, or stop using the product if no mitigation exists (CISA required action).","reach":"network","impact":"high","summary":"Citrix NetScaler ADC and NetScaler Gateway have a code injection flaw in the management interface that lets an authenticated user run code remotely. CISA lists it as actively exploited in the wild.","category":"infrastructure","who_cares":["netscaler","citrix","self-hosted","gateway"],"confidence":0.6,"needs_auth":"yes","worst_case":"Authenticated attacker runs code on the appliance via management interface","analyst_note":"Find the Citrix advisory (CTX584986) for affected and fixed versions and the mitigation steps; the sources here give neither.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["managed-hosting","no-management-access-exposed"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000464,"input_tokens":2868,"output_tokens":355,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':19A,22A '-6548':20A,23A 'access':127C 'action':135C 'activ':99B 'adc':11A,26A,74B,106C 'allow':15A,116C 'and':27A 'appli':136C 'application':32A,37A,42A,47A,52A 'attack':17A 'authent':90B,118C 'cisa':95B,133C 'citrix':24A,30A,35A,40A,45A,50A,55A,58A,61A,64B,72B,104C 'clip':130C 'code':6A,7A,80B,93B,112C,120C 'contain':110C 'control':2A 'controller':34A,39A,44A,49A,54A 'cve':18A,21A 'delivery':33A,38A,43A,48A,53A 'discontinu':142C 'execut':121C 'exploit':65B,100B 'flaw':82B 'gateway':14A,29A,57A,60A,63A,66B,77B,109C 'generat':4A 'host':71B 'improp':1A 'infrastructur':67B 'inject':8A,81B,113C 'instruct':140C 'interfac':86B,125C 'let':88B 'list':96B 'manag':85B,124C 'mitig':137C,148C 'netscal':10A,13A,68B,73B,76B,105C,108C 'netscaler':25A,28A,31A,36A,41A,46A,51A,56A,59A,62A 'nsip':129C 'per':138C 'product':146C 'remot':94B,119C 'requir':134C 'run':92B 'self':70B 'self-host':69B 'snip':132C 'unavail':150C 'use':143C 'user':91B 'vendor':139C 'vulner':114C 'wild':103B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-01-17T00:00:00+00:00","kev":{"dateAdded":"2024-01-17","dueDate":"2024-01-24","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cvss_by":"secure@citrix.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-6548","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-6548","severity":null,"published_at":"2024-01-17T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T11:39:15+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-6548","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6548","severity":null,"published_at":"2024-01-17T20:15:50+00:00","modified_at":"2026-06-17T06:50:58+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"}