{"cve":"CVE-2021-27463","nvd":{"published":"2021-05-20T12:15:08.197","modified":"2026-06-17T03:44:54.750","status":"Modified","description":"A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The affected applications utilize persistent cookies where the session cookie attribute is not properly invalidated, allowing an attacker to intercept the cookies and gain access to sensitive information.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-539"],"references":["https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01","https://us-cert.cisa.gov/ics/advisories/icsa-21-138-01"],"products":["emerson:x-stream_enhanced_xefd_firmware","emerson:x-stream_enhanced_xegk_firmware","emerson:x-stream_enhanced_xegp_firmware","emerson:x-stream_enhanced_xexf_firmware"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-27463","score":0.009,"percentile":0.5966,"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."]}