{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2020-0688 in the wild since at least 3 Nov 2021, including in ransomware campaigns.","fix":"No fix has been published for CVE-2020-0688 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.","what":"CVE-2020-0688 is a high-severity memory corruption vulnerability in Microsoft Exchange Server, published on 11 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-0688 and fix it if it is affected.\n\nWhat it is: CVE-2020-0688 is a high-severity memory corruption vulnerability in Microsoft Exchange Server, published on 11 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2020-0688 in the wild since at least 3 Nov 2021, including in ransomware campaigns.\n\nAffected product: Microsoft Exchange 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-2020-0688/ (Markdown: https://insights.sbomify.com/CVE-2020-0688/index.md)","id":"CVE-2020-0688","markdown":"https://insights.sbomify.com/CVE-2020-0688/index.md","name":"CVE-2020-0688","record":{"aliases":["GHSA-4g56-8mc7-hpjq"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Exchange Server","requires_auth":"low_privilege","summary":"Attackers can execute arbitrary code remotely on Microsoft Exchange Server due to improper memory handling.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"exchange_server","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.","ecosystems":[],"exploits":{"exploitdb":2,"first_seen":"2020-02-11","github_poc":25,"max_poc_stars":354,"metasploit":1,"nuclei":0,"refs":[{"date":"2020-03-01T12:57:32Z","kind":"github_poc","ref":"https://github.com/zcgonvh/CVE-2020-0688","stars":354,"title":"Exploit and detect tools for CVE-2020-0688"},{"date":"2020-02-27T02:54:27Z","kind":"github_poc","ref":"https://github.com/Ridter/cve-2020-0688","stars":327,"title":"cve-2020-0688"},{"date":"2020-02-25T23:44:16Z","kind":"github_poc","ref":"https://github.com/random-robbie/cve-2020-0688","stars":165,"title":"cve-2020-0688"},{"date":"2020-02-27T13:53:46Z","kind":"github_poc","ref":"https://github.com/Yt1g3r/CVE-2020-0688_EXP","stars":144,"title":"CVE-2020-0688_EXP Auto trigger payload \u0026 encrypt method"},{"date":"2020-02-26T12:28:11Z","kind":"github_poc","ref":"https://github.com/Jumbo-WJB/CVE-2020-0688","stars":66,"title":"CVE-2020-0688 - Exchange"},{"date":"2020-02-28T16:04:30Z","kind":"github_poc","ref":"https://github.com/onSec-fr/CVE-2020-0688-Scanner","stars":37,"title":"Quick tool for checking CVE-2020-0688 on multiple hosts with a non-intrusive method."},{"date":"2020-06-12T08:28:35Z","kind":"github_poc","ref":"https://github.com/w4fz5uck5/cve-2020-0688-webshell-upload-technique","stars":23,"title":"cve-2020-0688 UNIVERSAL Python implementation utilizing ASPX webshell for command output"},{"date":"2021-01-04T10:48:40Z","kind":"github_poc","ref":"https://github.com/MrTiz/CVE-2020-0688","stars":22,"title":"Remote Code Execution on Microsoft Exchange Server through fixed cryptographic keys"}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Exchange Server Validation Key Remote Code Execution","id":"CVE-2020-0688","indexable":true,"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Known","product":"Exchange Server","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:exchange_server","products":["microsoft:exchange_server"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":4,"next":{"headline":"Security feature bypass in Windows","id":"CVE-2020-0689"},"packages":[],"prev":{"headline":"Memory corruption in Windows","id":"CVE-2020-0687"},"products":["Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30","Microsoft Exchange Server 2013","Microsoft Exchange Server 2016 Cumulative Update 14","Microsoft Exchange Server 2016 Cumulative Update 15","Microsoft Exchange Server 2019 Cumulative Update 3","Microsoft Exchange Server 2019 Cumulative Update 4"],"published":"2020-02-11","related":[{"cvss_score":9.8,"headline":"Microsoft Exchange Server Privilege Escalation","id":"CVE-2024-21410","kev_date_added":"2024-02-15","published":"2024-02-13"},{"cvss_score":9.1,"headline":"Microsoft Exchange Server Remote Code Execution","id":"CVE-2021-34473","kev_date_added":"2021-11-03","published":"2021-07-14"},{"cvss_score":9.1,"headline":"Microsoft Exchange Server Remote Code Execution","id":"CVE-2021-26855","kev_date_added":"2021-11-03","published":"2021-03-02"},{"cvss_score":9,"headline":"Microsoft Exchange Server Privilege Escalation","id":"CVE-2021-34523","kev_date_added":"2021-11-03","published":"2021-07-14"},{"cvss_score":8.8,"headline":"Microsoft Exchange Server Deserialization of Untrusted Data","id":"CVE-2023-21529","kev_date_added":"2026-04-13","published":"2023-02-14"},{"cvss_score":8.8,"headline":"Microsoft Exchange Server Privilege Escalation","id":"CVE-2022-41080","kev_date_added":"2023-01-10","published":"2022-11-09"},{"cvss_score":8.8,"headline":"Microsoft Exchange Server Server-Side Request Forgery","id":"CVE-2022-41040","kev_date_added":"2022-09-30","published":"2022-10-03"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Microsoft"]},"summary":"Attackers can execute arbitrary code remotely on Microsoft Exchange Server due to improper memory handling.","url":"https://insights.sbomify.com/CVE-2020-0688/"}