{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-41349 exists.","fix":"No fix has been published for CVE-2021-41349 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-41349 is a medium-severity vulnerability in Microsoft Exchange Server, published on 10 Nov 2021. 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-2021-41349 and fix it if it is affected.\n\nWhat it is: CVE-2021-41349 is a medium-severity vulnerability in Microsoft Exchange Server, published on 10 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-41349 exists.\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-2021-41349/ (Markdown: https://insights.sbomify.com/CVE-2021-41349/index.md)","id":"CVE-2021-41349","markdown":"https://insights.sbomify.com/CVE-2021-41349/index.md","name":"CVE-2021-41349","record":{"aliases":["GHSA-xjg9-924r-39mj"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Exchange Server","requires_auth":"none","summary":"An attacker can spoof email headers in Microsoft Exchange Server, bypassing security controls and misleading recipients.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"exchange_server","vendor":"microsoft"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"Microsoft Exchange Server Spoofing Vulnerability","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2022-01-06","github_poc":2,"max_poc_stars":11,"metasploit":0,"nuclei":1,"refs":[{"date":"2022-01-06T09:44:15Z","kind":"github_poc","ref":"https://github.com/exploit-io/CVE-2021-41349","stars":11,"title":"Exploiting: CVE-2021-41349"},{"date":"2022-07-30T10:51:55Z","kind":"github_poc","ref":"https://github.com/0xrobiul/CVE-2021-41349","stars":4,"title":"Microsoft Exchange Server Spoofing Vulnerability Exploit!"},{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-41349.yaml","stars":null,"title":"Microsoft Exchange Server Pre-Auth POST Based Cross-Site Scripting"}],"tier":"weaponised"},"has_fix":null,"headline":"Microsoft Exchange Server Spoofing Vulnerability","id":"CVE-2021-41349","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:exchange_server","products":["microsoft:exchange_server"],"type":"other","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Exchange Server Spoofing Vulnerability","id":"CVE-2021-41350"},"packages":[],"prev":{"headline":"Microsoft Exchange Server Elevation of Privilege Vulnerability","id":"CVE-2021-41348"},"products":["Microsoft Exchange Server 2013 Cumulative Update 23","Microsoft Exchange Server 2016 Cumulative Update 21","Microsoft Exchange Server 2016 Cumulative Update 22","Microsoft Exchange Server 2019 Cumulative Update 10","Microsoft Exchange Server 2019 Cumulative Update 11"],"published":"2021-11-10","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":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-19","vendors":["Microsoft"]},"summary":"An attacker can spoof email headers in Microsoft Exchange Server, bypassing security controls and misleading recipients.","url":"https://insights.sbomify.com/CVE-2021-41349/"}