{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-16886 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-16886 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-16886 is a medium-severity vulnerability in Microsoft PowerShellGet 2.2.5, published on 16 Oct 2020. 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-2020-16886 and fix it if it is affected.\n\nWhat it is: CVE-2020-16886 is a medium-severity vulnerability in Microsoft PowerShellGet 2.2.5, published on 16 Oct 2020. 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-2020-16886 in the wild and no public exploit code.\n\nAffected product: Microsoft PowerShellGet 2.2.5. 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-2020-16886/ (Markdown: https://insights.sbomify.com/CVE-2020-16886/index.md)","id":"CVE-2020-16886","markdown":"https://insights.sbomify.com/CVE-2020-16886/index.md","name":"CVE-2020-16886","record":{"aliases":["GHSA-xp2m-r7f6-m54m"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"PowerShell module","requires_auth":"low_privilege","summary":"An attacker with admin privileges can bypass WDAC policy to execute arbitrary code on locked-down machines via PowerShellGet.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"powershellget","vendor":"microsoft"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"\u003cp\u003eA security feature bypass vulnerability exists in the PowerShellGet V2 module. An attacker who successfully exploited this vulnerability could bypass WDAC (Windows Defender Application Control) policy and execute arbitrary code on a policy locked-down machine.\u003c/p\u003e\n\u003cp\u003eAn attacker must have administrator privileges to create a configuration that includes installing PowerShellGet V2 module onto a machine from the PowerShell Gallery. The WDAC policy must be configured to allow the module to run. After this is done, PowerShell script can be injected and run fully trusted, allowing the attacker arbitrary code execution on the machine.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by changing how URLs are processed.\u003c/p\u003e","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":"PowerShellGet Module WDAC Security Feature Bypass Vulnerability","id":"CVE-2020-16886","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Network Connections Service Elevation of Privilege Vulnerability","id":"CVE-2020-16887"},"packages":[],"prev":{"headline":"Windows Storage VSP Driver Elevation of Privilege Vulnerability","id":"CVE-2020-16885"},"products":["PowerShellGet 2.2.5"],"published":"2020-10-16","related":[],"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":"2024-08-04","vendors":["Microsoft"]},"summary":"An attacker with admin privileges can bypass WDAC policy to execute arbitrary code on locked-down machines via PowerShellGet.","url":"https://insights.sbomify.com/CVE-2020-16886/"}