{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-35971 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-35971 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-35971 is a critical unsafe deserialization vulnerability in n/a, published on 30 Jun 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-2021-35971 and fix it if it is affected.\n\nWhat it is: CVE-2021-35971 is a critical unsafe deserialization vulnerability in n/a, published on 30 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-35971 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-35971/ (Markdown: https://insights.sbomify.com/CVE-2021-35971/index.md)","id":"CVE-2021-35971","markdown":"https://insights.sbomify.com/CVE-2021-35971/index.md","name":"CVE-2021-35971","record":{"aliases":["GHSA-vmw6-j58p-9p55"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Backup and Replication","requires_auth":"none","summary":"Attackers can execute arbitrary code by exploiting unsafe deserialization in Veeam Backup and Replication's .NET remoting interface.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"veeam_backup_\\\u0026_replication","vendor":"veeam"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Deserialization in n/a","id":"CVE-2021-35971","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Auth bypass in n/a","id":"CVE-2021-35973"},"packages":[],"prev":{"headline":"Information disclosure in n/a","id":"CVE-2021-35970"},"products":["n/a"],"published":"2021-06-30","related":[{"cvss_score":9.8,"headline":"Veeam Backup and Replication Deserialization","id":"CVE-2024-40711","kev_date_added":"2024-10-17","published":"2024-09-07"},{"cvss_score":9.8,"headline":"Veeam Backup \u0026 Replication Remote Code Execution","id":"CVE-2022-26501","kev_date_added":"2022-12-13","published":"2022-03-17"},{"cvss_score":8.8,"headline":"Veeam Backup \u0026 Replication Remote Code Execution","id":"CVE-2022-26500","kev_date_added":"2022-12-13","published":"2022-03-17"},{"cvss_score":7.5,"headline":"Veeam Backup \u0026 Replication Cloud Connect Missing Authentication for Critical Function","id":"CVE-2023-27532","kev_date_added":"2023-08-22","published":"2023-03-10"},{"cvss_score":10,"headline":"Missing authorization in Backup and Replication","id":"CVE-2026-21666","kev_date_added":null,"published":"2026-03-12"},{"cvss_score":10,"headline":"Missing authorization in Backup and Replication","id":"CVE-2026-21667","kev_date_added":null,"published":"2026-03-12"},{"cvss_score":10,"headline":"Code injection in Backup and Replication","id":"CVE-2026-21669","kev_date_added":null,"published":"2026-03-12"}],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code by exploiting unsafe deserialization in Veeam Backup and Replication's .NET remoting interface.","url":"https://insights.sbomify.com/CVE-2021-35971/"}