{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-2135 exists.","fix":"No fix has been published for CVE-2021-2135 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-2135 is a critical unsafe deserialization vulnerability in Oracle Weblogic Server, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-2135 and fix it if it is affected.\n\nWhat it is: CVE-2021-2135 is a critical unsafe deserialization vulnerability in Oracle Weblogic Server, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-2135 exists.\n\nAffected product: Oracle Weblogic Server. 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-2021-2135/ (Markdown: https://insights.sbomify.com/CVE-2021-2135/index.md)","id":"CVE-2021-2135","markdown":"https://insights.sbomify.com/CVE-2021-2135/index.md","name":"CVE-2021-2135","record":{"aliases":["GHSA-vrrf-frmq-98j4"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"WebLogic Server","requires_auth":"none","summary":"Unauthenticated attackers can achieve full server takeover via network access to WebLogic Server, requiring immediate patching.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"oracle","cpe":[{"product":"weblogic_server","vendor":"oracle"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Coherence Container). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","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/2021/CVE-2021-2135.yaml","stars":null,"title":"Oracle WebLogic Server - Remote Code Execution"}],"tier":"weaponised"},"has_fix":null,"headline":"Deserialization in WebLogic Server","id":"CVE-2021-2135","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"oracle:weblogic_server","products":["oracle:weblogic_server"],"type":"deserialization","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Other in WebLogic Server","id":"CVE-2021-2136"},"packages":[],"prev":{"headline":"Denial of service in Enterprise Manager for Fusion Middleware","id":"CVE-2021-2134"},"products":["WebLogic Server"],"published":"2021-04-22","related":[{"cvss_score":9.8,"headline":"Oracle WebLogic Server Remote Code Execution","id":"CVE-2020-14750","kev_date_added":"2021-11-03","published":"2020-11-01"},{"cvss_score":9.8,"headline":"Oracle WebLogic Server Remote Code Execution","id":"CVE-2020-14882","kev_date_added":"2021-11-03","published":"2020-10-21"},{"cvss_score":9.8,"headline":"Oracle WebLogic Server Remote Code Execution","id":"CVE-2020-14644","kev_date_added":"2024-09-18","published":"2020-07-15"},{"cvss_score":9.8,"headline":"Oracle WebLogic Server Unspecified","id":"CVE-2020-2883","kev_date_added":"2025-01-07","published":"2020-04-15"},{"cvss_score":9.8,"headline":"Oracle Fusion Middleware Unspecified","id":"CVE-2020-2551","kev_date_added":"2023-11-16","published":"2020-01-15"},{"cvss_score":9.8,"headline":"Oracle WebLogic Server Unspecified","id":"CVE-2018-2628","kev_date_added":"2022-09-08","published":"2018-04-19"},{"cvss_score":7.5,"headline":"Oracle WebLogic Server Unspecified","id":"CVE-2024-21182","kev_date_added":"2026-06-01","published":"2024-07-16"}],"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":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-09-26","vendors":["Oracle Corporation"]},"summary":"Unauthenticated attackers can achieve full server takeover via network access to WebLogic Server, requiring immediate patching.","url":"https://insights.sbomify.com/CVE-2021-2135/"}