{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2025-3935 in the wild since at least 2 Jun 2025.","fix":"No fix has been published for CVE-2025-3935 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 23 Jun 2025.","what":"CVE-2025-3935 is a high-severity unsafe deserialization vulnerability in ConnectWise ScreenConnect, published on 25 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-3935 and fix it if it is affected.\n\nWhat it is: CVE-2025-3935 is a high-severity unsafe deserialization vulnerability in ConnectWise ScreenConnect, published on 25 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2025-3935 in the wild since at least 2 Jun 2025.\n\nAffected product: ConnectWise ScreenConnect. 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-2025-3935/ (Markdown: https://insights.sbomify.com/CVE-2025-3935/index.md)","id":"CVE-2025-3935","markdown":"https://insights.sbomify.com/CVE-2025-3935/index.md","name":"CVE-2025-3935","record":{"aliases":["GHSA-qjrp-xr9r-wmrg"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Remote support software","requires_auth":"none","summary":"Attackers with privileged access to machine keys can inject malicious ViewState data to achieve remote code execution on the server.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ConnectWise","cpe":[{"product":"screenconnect","vendor":"connectwise"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/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":"ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys. \nIt is important to note that to obtain these machine keys, privileged system level access must be obtained. \n\nIf these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server. \n\nThe risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior.  This had no direct impact to ScreenConnect Client. ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"exploited"},"has_fix":null,"headline":"ConnectWise ScreenConnect Improper Authentication","id":"CVE-2025-3935","indexable":true,"kev":{"dateAdded":"2025-06-02","dueDate":"2025-06-23","knownRansomwareCampaignUse":"Unknown","product":"ScreenConnect","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","vendorProject":"ConnectWise","vulnerabilityName":"ConnectWise ScreenConnect Improper Authentication Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"Incorrect Permission Assignment for Critical Resource","id":"CVE-2025-3936"},"packages":[],"prev":{"headline":"Regular Expression Denial of Service (ReDoS) in huggingface/transformers","id":"CVE-2025-3933"},"products":["ScreenConnect"],"published":"2025-04-25","related":[{"cvss_score":10,"headline":"ConnectWise ScreenConnect Authentication Bypass","id":"CVE-2024-1709","kev_date_added":"2024-02-22","published":"2024-02-21"},{"cvss_score":9.9,"headline":"ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization","id":"CVE-2026-84869","kev_date_added":"2026-09-11","published":"2026-09-08"},{"cvss_score":8.4,"headline":"ConnectWise ScreenConnect Path Traversal","id":"CVE-2024-1708","kev_date_added":"2026-04-28","published":"2024-02-21"},{"cvss_score":9.1,"headline":"Improper server-side validation in ScreenConnect extension framework","id":"CVE-2025-14265","kev_date_added":null,"published":"2025-12-11"},{"cvss_score":5.3,"headline":"Certificate Signing Extension Returns Encrypted Values","id":"CVE-2025-14823","kev_date_added":null,"published":"2025-12-18"},{"cvss_score":5.3,"headline":"ConnectWise - ScreenConnect Session Code Bypass","id":"CVE-2022-36781","kev_date_added":null,"published":"2022-09-28"}],"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)"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-26","vendors":["ConnectWise"]},"summary":"Attackers with privileged access to machine keys can inject malicious ViewState data to achieve remote code execution on the server.","url":"https://insights.sbomify.com/CVE-2025-3935/"}