{"id":"CVE-2026-91839","state":"PUBLISHED","title":"Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials","description":"A flaw was found in NetworkManager-fortisslvpn, the FortiSSLVPN plugin for NetworkManager. The nm-fortisslvpn-service improperly handles carriage-return/line-feed (CR/LF) characters in VPN connection profile credentials. A local unprivileged user can exploit this by crafting a malicious VPN profile to inject additional configuration directives. This can lead to arbitrary code execution with root privileges when the crafted VPN connection is activated.","publishedAt":"2026-09-25T17:56:31.225Z","updatedAt":"2026-09-28T12:44:46.096Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"fedora"},"assigner":"fedora","products":["GNOME NetworkManager-fortisslvpn"],"affected":[{"vendor":"GNOME","product":"NetworkManager-fortisslvpn","packageName":"network-manager-fortisslvpn","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"semver"}],"collectionURL":"https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn"}],"references":["https://access.redhat.com/security/cve/CVE-2026-91839","https://bugzilla.redhat.com/show_bug.cgi?id=2533640","https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80"],"weaknesses":["CWE-93"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91839.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91839","state":"PUBLISHED","datePublished":"2026-09-25T17:56:31.225Z","dateUpdated":"2026-09-28T12:44:46.096Z","assignerShortName":"fedora","assignerOrgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateReserved":"2026-09-15T08:28:01.333Z"},"containers":{"cna":{"title":"Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials","descriptions":[{"lang":"en","value":"A flaw was found in NetworkManager-fortisslvpn, the FortiSSLVPN plugin for NetworkManager. The nm-fortisslvpn-service improperly handles carriage-return/line-feed (CR/LF) characters in VPN connection profile credentials. A local unprivileged user can exploit this by crafting a malicious VPN profile to inject additional configuration directives. This can lead to arbitrary code execution with root privileges when the crafted VPN connection is activated."}],"affected":[{"vendor":"GNOME","product":"NetworkManager-fortisslvpn","packageName":"network-manager-fortisslvpn","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"semver"}],"collectionURL":"https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91839","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533640","name":"RHBZ#2533640","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80"}],"metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-93","description":"Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"fedora","orgId":"92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5","dateUpdated":"2026-09-25T17:56:31.225Z"},"datePublic":"2026-09-15T09:45:39.220Z","x_redhatCweChain":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","workarounds":[{"lang":"en","value":"If the NetworkManager-fortisslvpn plugin is not required, remove the `NetworkManager-fortisslvpn` package to eliminate the attack vector.\nTo remove the package:\n`sudo dnf remove NetworkManager-fortisslvpn`\nThis action may impact systems that rely on FortiSSLVPN connectivity. A system restart may be required for the changes to take full effect."}],"timeline":[{"lang":"en","time":"2026-09-15T09:45:39.220Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-15T09:45:39.220Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Andreas Gabriel Berbescu for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-26T03:55:54.065989Z","id":"CVE-2026-91839","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-28T12:44:46.096Z"}}]}}}