{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-47961 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-47961 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47961 is a high-severity vulnerability in Synology SSL VPN Client, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-47961 and fix it if it is affected.\n\nWhat it is: CVE-2021-47961 is a high-severity vulnerability in Synology SSL VPN Client, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-47961 in the wild and no public exploit code.\n\nAffected product: Synology SSL VPN Client. 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-2021-47961/ (Markdown: https://insights.sbomify.com/CVE-2021-47961/index.md)","id":"CVE-2021-47961","markdown":"https://insights.sbomify.com/CVE-2021-47961/index.md","name":"CVE-2021-47961","record":{"aliases":["GHSA-2jcx-2m59-6cv8"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Synology SSL VPN Client","requires_auth":"none","summary":"Attackers can access stored PIN codes due to plaintext storage, enabling unauthorized VPN configuration and potential traffic interception.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"synology","cpe":[{"product":"ssl_vpn_client","vendor":"synology"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-256","name":"Plaintext Storage of a Password"}],"description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","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":"Information disclosure in Synology SSL VPN Client","id":"CVE-2021-47961","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Savsoft Quiz 5.0 Persistent Cross-Site Scripting via User Settings","id":"CVE-2021-47962"},"packages":[],"prev":{"headline":"Information disclosure in Synology SSL VPN Client","id":"CVE-2021-47960"},"products":["Synology SSL VPN Client"],"published":"2026-04-10","related":[{"cvss_score":8.8,"headline":"Security feature bypass in SSL VPN Client","id":"CVE-2018-13283","kev_date_added":null,"published":"2019-04-01"},{"cvss_score":7.3,"headline":"Security feature bypass in SSL VPN Client","id":"CVE-2018-8929","kev_date_added":null,"published":"2018-07-06"},{"cvss_score":6.5,"headline":"Information disclosure in Synology SSL VPN Client","id":"CVE-2021-47960","kev_date_added":null,"published":"2026-04-10"},{"cvss_score":3.3,"headline":"Memory corruption in Synology SSL VPN Client","id":"CVE-2023-5748","kev_date_added":null,"published":"2023-10-24"}],"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":"2026-04-10","vendors":["Synology"]},"summary":"Attackers can access stored PIN codes due to plaintext storage, enabling unauthorized VPN configuration and potential traffic interception.","url":"https://insights.sbomify.com/CVE-2021-47961/"}