{"answers":{"affected":"It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2026-88771 in the wild since at least 27 Sep 2026.","fix":"No fix has been published for CVE-2026-88771 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 30 Sep 2026.","what":"CVE-2026-88771 is a critical command injection vulnerability in Citrix NetScaler ADC, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-88771 and fix it if it is affected.\n\nWhat it is: CVE-2026-88771 is a critical command injection vulnerability in Citrix NetScaler ADC, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-88771 in the wild since at least 27 Sep 2026.\n\nAffected product: Citrix NetScaler ADC. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-88771/ (Markdown: https://insights.sbomify.com/CVE-2026-88771/index.md)","id":"CVE-2026-88771","markdown":"https://insights.sbomify.com/CVE-2026-88771/index.md","name":"CVE-2026-88771","record":{"aliases":["GHSA-mx58-p288-86qp"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Citrix NetScaler ADC","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary commands on Citrix NetScaler ADC and Gateway due to improper input validation.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"NetScaler","cpe":[{"product":"netscaler_application_delivery_controller","vendor":"citrix"},{"product":"netscaler_gateway","vendor":"citrix"}],"cvss":{"score":9.5,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to an unauthenticated attacker to execute arbitrary commands.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-27","github_poc":12,"max_poc_stars":22,"metasploit":1,"nuclei":0,"refs":[{"date":"2026-09-27T18:15:38Z","kind":"github_poc","ref":"https://github.com/watchtowrlabs/watchTowr-vs-Citrix-Netscaler-CVE-2026-88771","stars":22,"title":null},{"date":"2026-09-28T11:20:30Z","kind":"github_poc","ref":"https://github.com/ThomasPoppelgaard/netscaler-ctx697096-checker","stars":22,"title":"Am I fixed? Was I hacked? Read-only checker for Citrix NetScaler CTX697096 (CVE-2026-88771–88778), CTX697174, CTX697191 (SAML RCE) and CTX697263 php2shell (fixed in 14.1-73.49 / 13.1-64.32): build, CVE preconditions, SAML, mgmt exposure, MFA, upgrade risks + IoC sweep with every public IoC (webshells, implants, 133 attacker IPs)."},{"date":"2026-09-28T04:56:11Z","kind":"github_poc","ref":"https://github.com/technion/netscaler_scanner","stars":1,"title":"Tooling related to CVE-2026-88771 and CVE-2026-88772"},{"date":"2026-09-28T10:06:54Z","kind":"github_poc","ref":"https://github.com/craigsblackie/cve-2026-88771-netscaler","stars":1,"title":null},{"date":"2026-10-08T00:43:03Z","kind":"github_poc","ref":"https://github.com/grupooruss/netscaler-defensive-checker","stars":1,"title":"Defensive security checker for Citrix NetScaler ADC \u0026 Gateway — CVE-2026-88771 through CVE-2026-88778"},{"date":"2026-09-27","kind":"metasploit","ref":"exploit/freebsd/http/citrix_netscaler_cve_2026_88771","stars":null,"title":"Citrix NetScaler Unauthenticated Login Log Command Injection (CVE-2026-88771)"},{"date":"2026-09-28T11:36:56Z","kind":"github_poc","ref":"https://github.com/techupdate24/citrix-netscaler-cve-2026-88771-rce","stars":0,"title":"A complete guide and workflow for integrating Agile sprints with DevOps CI/CD pipelines."},{"date":"2026-09-29T14:28:48Z","kind":"github_poc","ref":"https://github.com/SwiftSecur/CVE-2026-88771-HuntScript","stars":0,"title":"A detection/hunting script for compromise related to CVE-2026-88771"}],"tier":"exploited"},"has_fix":null,"headline":"Citrix NetScaler Improper Input Validation","id":"CVE-2026-88771","indexable":true,"kev":{"dateAdded":"2026-09-27","dueDate":"2026-09-30","knownRansomwareCampaignUse":"Unknown","product":"NetScaler","requiredAction":"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.","vendorProject":"Citrix","vulnerabilityName":"Citrix NetScaler Improper Input Validation Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer","id":"CVE-2026-88772"},"packages":[],"prev":{"headline":"Keycloak-services: keycloak-services: device authorization grant issues tokens to brute-force-locked accounts","id":"CVE-2026-88770"},"products":["ADC","Gateway"],"published":"2026-09-27","related":[{"cvss_score":9.8,"headline":"Citrix NetScaler ADC and NetScaler Gateway Code Injection","id":"CVE-2023-3519","kev_date_added":"2023-07-19","published":"2023-07-19"},{"cvss_score":9.5,"headline":"Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer","id":"CVE-2026-88772","kev_date_added":"2026-09-27","published":"2026-09-27"},{"cvss_score":9.4,"headline":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow","id":"CVE-2023-4966","kev_date_added":"2023-10-18","published":"2023-10-10"},{"cvss_score":9.3,"headline":"Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel","id":"CVE-2026-19490","kev_date_added":"2026-09-09","published":"2026-08-19"},{"cvss_score":9.3,"headline":"Citrix NetScaler Out-of-Bounds Read","id":"CVE-2026-3055","kev_date_added":"2026-03-30","published":"2026-03-23"},{"cvss_score":9.3,"headline":"Citrix NetScaler ADC and Gateway Out-of-Bounds Read","id":"CVE-2025-5777","kev_date_added":"2025-07-10","published":"2025-06-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-29","vendors":["Citrix NetScaler"]},"summary":"Unauthenticated attackers can execute arbitrary commands on Citrix NetScaler ADC and Gateway due to improper input validation.","url":"https://insights.sbomify.com/CVE-2026-88771/"}