{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-26422 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-26422 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-26422 is a high-severity code injection vulnerability in Microsoft Lync Server 2013 CU10, published on 11 May 2021. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-26422 and fix it if it is affected.\n\nWhat it is: CVE-2021-26422 is a high-severity code injection vulnerability in Microsoft Lync Server 2013 CU10, published on 11 May 2021. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-26422 in the wild and no public exploit code.\n\nAffected product: Microsoft Lync Server 2013 CU10. 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-2021-26422/ (Markdown: https://insights.sbomify.com/CVE-2021-26422/index.md)","id":"CVE-2021-26422","markdown":"https://insights.sbomify.com/CVE-2021-26422/index.md","name":"CVE-2021-26422","record":{"aliases":["GHSA-322h-m7q9-7x4q"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Skype for Business Server","requires_auth":"high_privilege","summary":"An attacker can execute arbitrary code on Microsoft Skype for Business and Lync servers, requiring immediate patching by administrators.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"lync_server","vendor":"microsoft"},{"product":"skype_for_business_server","vendor":"microsoft"}],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"Skype for Business and Lync Remote Code Execution Vulnerability","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":"Skype for Business and Lync Remote Code Execution Vulnerability","id":"CVE-2021-26422","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":".NET Core and Visual Studio Denial of Service Vulnerability","id":"CVE-2021-26423"},"packages":[],"prev":{"headline":"Skype for Business and Lync Spoofing Vulnerability","id":"CVE-2021-26421"},"products":["Microsoft Lync Server 2013 CU10","Skype for Business Server 2015 CU11","Skype for Business Server 2019 CU5"],"published":"2021-05-11","related":[{"cvss_score":7.2,"headline":"Skype for Business and Lync Remote Code Execution Vulnerability","id":"CVE-2022-33633","kev_date_added":null,"published":"2022-07-12"},{"cvss_score":6.5,"headline":"Skype for Business Information Disclosure Vulnerability","id":"CVE-2022-26911","kev_date_added":null,"published":"2022-04-15"},{"cvss_score":6.5,"headline":"Skype for Business and Lync Spoofing Vulnerability","id":"CVE-2021-26421","kev_date_added":null,"published":"2021-05-11"},{"cvss_score":6.5,"headline":"Skype for Business and Lync Spoofing Vulnerability","id":"CVE-2021-24073","kev_date_added":null,"published":"2021-02-25"},{"cvss_score":6.5,"headline":"Skype for Business and Lync Denial of Service Vulnerability","id":"CVE-2021-24099","kev_date_added":null,"published":"2021-02-25"},{"cvss_score":6.1,"headline":"Cross-site scripting in Microsoft Lync Server 2013","id":"CVE-2019-0798","kev_date_added":null,"published":"2019-04-09"}],"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["Microsoft"]},"summary":"An attacker can execute arbitrary code on Microsoft Skype for Business and Lync servers, requiring immediate patching by administrators.","url":"https://insights.sbomify.com/CVE-2021-26422/"}