{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-25261 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-25261 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-25261 is a high-severity vulnerability in Yandex Browser (Desktop), published on 15 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25261 and fix it if it is affected.\n\nWhat it is: CVE-2021-25261 is a high-severity vulnerability in Yandex Browser (Desktop), published on 15 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25261 in the wild and no public exploit code.\n\nAffected product: Yandex Browser (Desktop). 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-2021-25261/ (Markdown: https://insights.sbomify.com/CVE-2021-25261/index.md)","id":"CVE-2021-25261","markdown":"https://insights.sbomify.com/CVE-2021-25261/index.md","name":"CVE-2021-25261","record":{"aliases":["GHSA-p6r9-h8xg-qhvr"],"analysis":{"component_type":"browser","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Yandex Browser","requires_auth":"low_privilege","summary":"Local attackers can escalate privileges to SYSTEM by manipulating symlinks during the Yandex Browser update process.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"yandex","cpe":[{"product":"yandex_browser","vendor":"yandex"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"Local privilege vulnerability in Yandex Browser for Windows prior to 22.5.0.862 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating symlinks to installation file during Yandex Browser update process.","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":"Privilege escalation in Yandex Browser (Desktop)","id":"CVE-2021-25261","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Yandex Browser for Android prior to version 21.3.0 allows remote attackers to perform IDN homograph attack.","id":"CVE-2021-25262"},"packages":[],"prev":{"headline":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","id":"CVE-2021-25255"},"products":["Yandex Browser (Desktop)"],"published":"2022-06-15","related":[{"cvss_score":8.4,"headline":"DLL Hijacking in Yandex Browser","id":"CVE-2024-6473","kev_date_added":null,"published":"2024-09-03"},{"cvss_score":8.3,"headline":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","id":"CVE-2021-25255","kev_date_added":null,"published":"2025-05-21"},{"cvss_score":8.2,"headline":"Yandex Browser Lite for Android before 21.1.0 allows remote attackers to spoof the address bar.","id":"CVE-2021-25254","kev_date_added":null,"published":"2025-05-21"},{"cvss_score":7.8,"headline":"Privilege escalation in Yandex Browser (Desktop)","id":"CVE-2022-28225","kev_date_added":null,"published":"2022-06-15"},{"cvss_score":7.8,"headline":"Privilege escalation in Yandex Browser (Desktop)","id":"CVE-2022-28226","kev_date_added":null,"published":"2022-06-15"},{"cvss_score":7.8,"headline":"Privilege escalation in Yandex Browser (Desktop)","id":"CVE-2021-25263","kev_date_added":null,"published":"2021-08-17"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Local attackers can escalate privileges to SYSTEM by manipulating symlinks during the Yandex Browser update process.","url":"https://insights.sbomify.com/CVE-2021-25261/"}