{"answers":{"affected":"It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2023-6549 in the wild since at least 17 Jan 2024.","fix":"No fix has been published for CVE-2023-6549 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 7 Feb 2024.","what":"CVE-2023-6549 is a high-severity memory corruption vulnerability in Cloud Software Group NetScaler ADC, published on 17 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6549 and fix it if it is affected.\n\nWhat it is: CVE-2023-6549 is a high-severity memory corruption vulnerability in Cloud Software Group NetScaler ADC, published on 17 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-6549 in the wild since at least 17 Jan 2024.\n\nAffected product: Cloud Software Group 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-2023-6549/ (Markdown: https://insights.sbomify.com/CVE-2023-6549/index.md)","id":"CVE-2023-6549","markdown":"https://insights.sbomify.com/CVE-2023-6549/index.md","name":"CVE-2023-6549","record":{"aliases":["GHSA-8fxh-p33g-qf5m"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"NetScaler ADC","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service and read out-of-bounds memory in NetScaler ADC and Gateway.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Citrix","cpe":[{"product":"netscaler_application_delivery_controller","vendor":"citrix"},{"product":"netscaler_gateway","vendor":"citrix"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"Improper Restriction of Operations within the Bounds of a Memory Buffer in NetScaler ADC and NetScaler Gateway allows Unauthenticated Denial of Service and Out-Of-Bounds Memory Read","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2023/CVE-2023-6549.yaml","stars":null,"title":"Citrix Netscaler ADC \u0026 Gateway - Out-Of-Bounds Memory Read"}],"tier":"exploited"},"has_fix":null,"headline":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow","id":"CVE-2023-6549","indexable":true,"kev":{"dateAdded":"2024-01-17","dueDate":"2024-02-07","knownRansomwareCampaignUse":"Unknown","product":"NetScaler ADC and NetScaler Gateway","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","vendorProject":"Citrix","vulnerabilityName":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Stored XSS in class.upload.php","id":"CVE-2023-6551"},"packages":[],"prev":{"headline":"Citrix NetScaler ADC and NetScaler Gateway Code Injection","id":"CVE-2023-6548"},"products":["NetScaler ADC"],"published":"2024-01-17","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 Input Validation","id":"CVE-2026-88771","kev_date_added":"2026-09-27","published":"2026-09-27"},{"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":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Cloud Software Group"]},"summary":"Unauthenticated attackers can cause denial of service and read out-of-bounds memory in NetScaler ADC and Gateway.","url":"https://insights.sbomify.com/CVE-2023-6549/"}