Security readout for executives and security teams
This flaw lets a remote attacker craft an email that bypasses Cisco ESA content filters that would normally drop it. It does not directly disclose data or crash systems, but it can weaken a key email security control and allow policy-blocked messages to reach users. Exposure is limited to organizations running Cisco Email Security Appliance with affected AsyncOS software. The provided affected version is 11.1.2-023. Risk depends on whether ESA content filters are configured to drop messages and whether ESA is in the inbound mail path. Treat this as a moderate-priority email security control issue. It should be scheduled for remediation, especially where ESA blocks phishing, malware, data-loss, or compliance-sensitive content. It is less urgent than remote code execution, but it directly weakens mail filtering assurance. Mitigation focus: Check Cisco’s advisory for affected and fixed AsyncOS releases.; Upgrade affected Cisco ESA appliances according to vendor guidance.; Review content filters that drop high-risk messages..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2019-1831 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.8MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20190417 Cisco Email Security Appliance Content Filter Bypass VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.