{"answers":{"affected":"It affects 3 products.","exploited":"Yes. Attackers have exploited CVE-2020-0878 in the wild since at least 3 Nov 2021, including in ransomware campaigns.","fix":"No fix has been published for CVE-2020-0878 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.","what":"CVE-2020-0878 is a medium-severity memory corruption vulnerability in Microsoft Chakracore, published on 11 Sep 2020. 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-2020-0878 and fix it if it is affected.\n\nWhat it is: CVE-2020-0878 is a medium-severity memory corruption vulnerability in Microsoft Chakracore, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: Yes. Attackers have exploited CVE-2020-0878 in the wild since at least 3 Nov 2021, including in ransomware campaigns.\n\nAffected product: Microsoft Chakracore. 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-2020-0878/ (Markdown: https://insights.sbomify.com/CVE-2020-0878/index.md)","id":"CVE-2020-0878","markdown":"https://insights.sbomify.com/CVE-2020-0878/index.md","name":"CVE-2020-0878","record":{"aliases":["GHSA-6j33-6rqj-fh2m"],"analysis":{"component_type":"browser","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft browsers","requires_auth":"none","summary":"Remote attackers can execute arbitrary code via crafted websites in Microsoft browsers, potentially gaining full system control if the user has administrative rights.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"chakracore","vendor":"microsoft"},{"product":"edge","vendor":"microsoft"},{"product":"internet_explorer","vendor":"microsoft"}],"cvss":{"score":4.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"\u003cp\u003eA remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\u003c/p\u003e\n\u003cp\u003eAn attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.\u003c/p\u003e","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Edge and Internet Explorer Memory Corruption","id":"CVE-2020-0878","indexable":true,"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Known","product":"Edge and Internet Explorer","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Edge and Internet Explorer Memory Corruption Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:chakracore","products":["microsoft:chakracore","microsoft:edge","microsoft:internet_explorer"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in Windows","id":"CVE-2020-0879"},"packages":[],"prev":{"headline":"Privilege escalation in Windows","id":"CVE-2020-0877"},"products":["ChakraCore","Internet Explorer 11","Internet Explorer 9","Microsoft Edge (EdgeHTML-based)"],"published":"2020-09-11","related":[{"cvss_score":7.5,"headline":"ChakraCore Scripting Engine Type Confusion","id":"CVE-2018-8298","kev_date_added":"2022-03-03","published":"2018-07-11"},{"cvss_score":9.8,"headline":"ChakraCore RCE Vulnerability","id":"CVE-2018-8500","kev_date_added":null,"published":"2018-10-10"},{"cvss_score":9.8,"headline":"ChakraCore vulnerable to privilege escalation","id":"CVE-2017-11767","kev_date_added":null,"published":"2017-11-02"},{"cvss_score":9.8,"headline":"ChakraCore RCE Vulnerability","id":"CVE-2017-8658","kev_date_added":null,"published":"2017-08-11"},{"cvss_score":8.8,"headline":"Scripting Engine Memory Corruption Vulnerability","id":"CVE-2020-1555","kev_date_added":null,"published":"2020-08-17"},{"cvss_score":8.1,"headline":"ChakraCore RCE Vulnerability","id":"CVE-2020-1073","kev_date_added":null,"published":"2020-06-09"}],"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":"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)"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Microsoft"]},"summary":"Remote attackers can execute arbitrary code via crafted websites in Microsoft browsers, potentially gaining full system control if the user has administrative rights.","url":"https://insights.sbomify.com/CVE-2020-0878/"}