{"cve":"CVE-2025-27512","nvd":{"published":"2025-03-17T15:15:44.557","modified":"2026-06-17T09:03:44.010","status":"Deferred","description":"Zincati is an auto-update agent for Fedora CoreOS hosts. Zincati ships a polkit rule which allows the `zincati` system user to use the actions `org.projectatomic.rpmostree1.deploy` to deploy updates to the system and `org.projectatomic.rpmostree1.finalize-deployment` to reboot the system into the deployed update. Since Zincati v0.0.24, this polkit rule contains a logic error which broadens access of those polkit actions to any unprivileged user rather than just the `zincati` system user. In practice, this means that any unprivileged user with access to the system D-Bus socket is able to deploy older Fedora CoreOS versions (which may have other known vulnerabilities). Note that rpm-ostree enforces that the selected version must be from the same branch the system is currently on so this cannot directly be used to deploy an attacker-controlled update payload. This primarily impacts users running untrusted workloads with access to the system D-Bus socket. Note that in general, untrusted workloads should not be given this access, whether containerized or not. By default, containers do not have access to the system D-Bus socket. The logic error is fixed in Zincati v0.0.30. A workaround is to manually add a following polkit rule, instructions for which are available in the GitHub Security Advisory.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U","score":2.1},"cvss_v3":null,"cwes":["CWE-783","CWE-863"],"references":["https://github.com/coreos/zincati/commit/01d8e89f799e6ba21bdf7dc668abce23bd0d8f78","https://github.com/coreos/zincati/commit/28a43aa2c1edda091ba659677d73c13e6e3ea99d","https://github.com/coreos/zincati/releases/tag/v0.0.24","https://github.com/coreos/zincati/releases/tag/v0.0.30","https://github.com/coreos/zincati/security/advisories/GHSA-w6fv-6gcc-x825"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:00:17.429720821+00:00"},"epss":{"cve":"CVE-2025-27512","score":0.00186,"percentile":0.0823,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w6fv-6gcc-x825","url":"https://osv.dev/vulnerability/GHSA-w6fv-6gcc-x825","summary":"Zincati allows unprivileged access to rpm-ostree D-Bus `Deploy()` and `FinalizeDeployment()` methods","modified":"2025-03-19T15:00:20Z","packages":[{"ecosystem":"crates.io","name":"zincati","purl":"pkg:cargo/zincati","ranges":[">=0.0.24 <0.0.30"],"fixed":["0.0.30"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}