{"cve":"CVE-2011-1901","nvd":{"published":"2011-05-05T14:55:03.183","modified":"2026-06-16T23:30:20.330","status":"Modified","description":"The mail-filter web interface in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier in Proofpoint Protection Server 5.5.3, 5.5.4, 5.5.5, 6.0.2, 6.1.1, and 6.2.0 allows remote attackers to bypass authentication via unspecified vectors.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-287"],"references":["http://www.clearskies.net/documents/css-advisory-css1105-proofpoint.php","http://www.kb.cert.org/vuls/id/790980","https://support.proofpoint.com/article.cgi?article_id=338413","http://www.clearskies.net/documents/css-advisory-css1105-proofpoint.php","http://www.kb.cert.org/vuls/id/790980"],"products":["proofpoint:messaging_security_gateway","proofpoint:protection_server"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-1901","score":0.01959,"percentile":0.80309,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}