Cisco Systems Inc. Cisco Registered Envelope Service

Name: Cisco Systems Inc. Cisco Registered Envelope Service
Brand: Cisco Systems Inc.

productRU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity

2critical1high3medium0low

updated 2026-10-27

vulnerabilities (6)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2021-44228US	critical10.0OT critical	100.0% (100th)	KEV	no fix	2021-12-10	—
CVE-2015-6420US	critical9.8	15.2% (97th)	Exploit	no fix	2015-12-15	—
CVE-2018-0208US	medium5.4	0.79% (56th)	Exploit	no fix	2018-03-08	≤ 5.3
CVE-2018-15448US	high7.5	2.22% (83rd)	—	no fix	2018-11-08	—
CVE-2018-0367US	medium5.4	0.91% (60th)	—	no fix	2018-08-15	5 versions
CVE-2019-1777US	medium5.4	0.88% (59th)	—	no fix	2019-04-18	≤ 5.3.4.

The flaw types (CWEs) most of these CVEs share.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')3 CVEs
CWE-502Deserialization of Untrusted Data2 CVEs
CWE-16CWE-161 CVEs
CWE-20Improper Input Validation1 CVEs
CWE-400Uncontrolled Resource Consumption1 CVEs
CWE-612Improper Authorization of Index Containing Sensitive Information1 CVEs
CWE-917Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')1 CVEs

Which sources assert this record, and when.

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