{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-34520 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-34520 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-34520 is a high-severity vulnerability in Arcserve Unified Data Protection (UDP), published on 27 Aug 2025."},"fix_prompt":"Check this codebase for CVE-2025-34520 and fix it if it is affected.\n\nWhat it is: CVE-2025-34520 is a high-severity vulnerability in Arcserve Unified Data Protection (UDP), published on 27 Aug 2025. \nExploitation: There is no known exploitation of CVE-2025-34520 in the wild and no public exploit code.\n\nAffected product: Arcserve Unified Data Protection (UDP). 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-2025-34520/ (Markdown: https://insights.sbomify.com/CVE-2025-34520/index.md)","id":"CVE-2025-34520","markdown":"https://insights.sbomify.com/CVE-2025-34520/index.md","name":"CVE-2025-34520","record":{"aliases":["GHSA-27qr-6rgm-2f59"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[{"product":"udp","vendor":"arcserve"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"description":"An authentication bypass vulnerability in Arcserve Unified Data Protection (UDP) allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts. By manipulating specific request parameters or exploiting a logic flaw, an attacker can bypass login mechanisms without valid credentials and access administrator-level features. This vulnerability affects all UDP versions prior to 10.2. UDP 10.2 includes the necessary patches and requires no action. Versions 8.0 through 10.1 are supported and require either patch application or upgrade to 10.2. Versions 7.x and earlier are unsupported or out of maintenance and must be upgraded to 10.2 to remediate the issue.","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":"Arcserve UDP \u003c 10.2 Authentication Bypass","id":"CVE-2025-34520","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Arcserve UDP \u003c 10.2 Reflected Cross-Site Scripting (XSS)","id":"CVE-2025-34521"},"packages":[],"prev":{"headline":"Ilevia EVE X1 Server 4.7.18.0.eden Insecure Hashing Algorithm","id":"CVE-2025-34519"},"products":["Unified Data Protection (UDP)"],"published":"2025-08-27","related":[{"cvss_score":9.1,"headline":"Arcserve Unified Data Protection (UDP) Directory Traversal","id":"CVE-2015-4068","kev_date_added":"2022-03-25","published":"2015-05-29"},{"cvss_score":9.8,"headline":"Authentication Bypass via wizardLogin in Arcserve Unified Data Protection","id":"CVE-2024-0799","kev_date_added":null,"published":"2024-03-13"},{"cvss_score":9.8,"headline":"Arcserve UDP Unauthenticated RCE","id":"CVE-2023-41998","kev_date_added":null,"published":"2023-11-27"},{"cvss_score":9.8,"headline":"Arcserve UDP Management Authentication Bypass","id":"CVE-2023-41999","kev_date_added":null,"published":"2023-11-27"},{"cvss_score":9.8,"headline":"Arcserve UDP Agent Unauthenticated Path Traversal File Upload","id":"CVE-2023-42000","kev_date_added":null,"published":"2023-11-27"},{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2023-26258","kev_date_added":null,"published":"2023-07-03"},{"cvss_score":9.2,"headline":"Arcserve UDP \u003c 10.2 Pre-Authentication Heap Overflow","id":"CVE-2025-34522","kev_date_added":null,"published":"2025-08-27"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-15","vendors":["Arcserve"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2025-34520/"}