{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-91839", "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "state": "PUBLISHED", "assignerShortName": "fedora", "dateReserved": "2026-09-15T08:28:01.333Z", "datePublished": "2026-09-25T17:56:31.225Z", "dateUpdated": "2026-09-25T18:15:49.928Z"}, "containers": {"cna": {"title": "Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials", "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"}], "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", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "semver"}], "packageName": "network-manager-fortisslvpn", "collectionURL": "https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn", "defaultStatus": "unaffected"}], "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"}], "datePublic": "2026-09-15T09:45:39.220Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-93", "description": "Improper Neutralization of CRLF Sequences ('CRLF Injection')", "lang": "en", "type": "CWE"}]}], "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."}], "providerMetadata": {"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "shortName": "fedora", "dateUpdated": "2026-09-25T17:56:31.225Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"references": [{"url": "https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-25T18:15:37.073355Z", "id": "CVE-2026-91839", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-25T18:15:49.928Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://gitlab.gnome.org/GNOME/NetworkManager-fortisslvpn", "defaultStatus": "unaffected", "packageName": "network-manager-fortisslvpn", "product": "NetworkManager-fortisslvpn", "vendor": "GNOME", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "patrick@puiterwijk.org"}], "cveTags": [], "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."}], "id": "CVE-2026-91839", "lastModified": "2026-09-25T18:17:32.660", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "patrick@puiterwijk.org", "type": "Secondary"}]}, "published": "2026-09-25T18:17:32.660", "references": [{"source": "patrick@puiterwijk.org", "url": "https://access.redhat.com/security/cve/CVE-2026-91839"}, {"source": "patrick@puiterwijk.org", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533640"}, {"source": "patrick@puiterwijk.org", "url": "https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80"}], "sourceIdentifier": "patrick@puiterwijk.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-93"}], "source": "patrick@puiterwijk.org", "type": "Secondary"}]}

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