What’s Vulnerable › Vulnerabilities

CVE-2017-3827

• Severity: medium (CVSS 5.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-22 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA, both virtual and hardware appliances, that are configured with message or content filters to scan incoming email attachments on the ESA or services scanning content of web access on the WSA. More Information: SCvb91473, CSCvc76500. Known Affected Releases: 10.0.0-203 9.9.9-894 WSA10.0.0-233.

Affected products

• Cisco Email Security Appliance: 9.9.6-026, 9.9.9-894, 10.0.0-082, 10.0.0-124, 10.0.0-125, 10.0.0-203 (+1)
• Cisco Web Security Appliance (WSA): 10.0.0-082, 10.0.0-124, 10.0.0-125, 10.0.0-203, 10.0.0-232

References

• http://www.securityfocus.com/bid/96239
• http://www.securitytracker.com/id/1037831
• http://www.securitytracker.com/id/1037832
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-asyncos
• http://www.securityfocus.com/bid/96239
• http://www.securitytracker.com/id/1037831
• http://www.securitytracker.com/id/1037832
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-asyncos

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