{"id":"CVE-2008-3803","aliases":["EUVD-2008-3789","GHSA-2wcv-w38q-52h8"],"status":"published","title":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN...","description":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.","severity":{"version":"2.0","score":5.1,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02647,"percentile":0.85722,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2008-09-26T16:00:00Z","modified":"2026-06-16T22:56:34Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://secunia.com/advisories/31990","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/31366","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5919","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Third Party Advisory"]},{"url":"http://www.securitytracker.com/id?1020940","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.vupen.com/english/advisories/2008/2670","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Permissions Required"]},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a014a9.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-3803"},{"url":"https://github.com/advisories/GHSA-2wcv-w38q-52h8"}],"sources":{"cve":[{"id":"CVE-2008-3803","description":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.","status":"published","published":"2008-09-26T16:00:00Z","modified":"2024-08-07T09:52:59.861Z","updated_at":"2026-11-02T14:34:45.877751Z"}],"euvd":[{"id":"EUVD-2008-3789","description":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.","status":"published","published":"2008-09-26T16:00:00Z","modified":"2024-08-07T09:52:59Z","updated_at":"2026-11-03T01:38:50.792737Z"}],"ghsa":[{"id":"GHSA-2wcv-w38q-52h8","title":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN...","description":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.","status":"published","published":"2022-05-02T00:03:48Z","modified":"2023-01-31T05:06:21Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:49:01.018652Z"}],"nvd":[{"id":"CVE-2008-3803","description":"A \"logic error\" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.","status":"published","published":"2008-09-26T16:21:44.16Z","modified":"2026-06-16T22:56:34.29Z","cvss":[{"version":"2.0","score":5.1,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:28.625777Z"}]}}