CVE-2017-3870

Name: CVE-2017-3870
Creator: NVD / NIST
Published: 2017-03-17T22:59:00.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.52%

Last modified Jun 17, 2026

CVE-2017-3870 is a vulnerability of currently unknown severity. A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. More Information: CSCvc69700. Known Affected Releases: 8.5.3-069 9.1.1-074 9.1.2-010.

Metrics

CVSS 3.0

/10

EPSS Probability

1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Cisco	Web Security Appliance	8.5.3-069
Cisco	Web Security Appliance	9.1.1-074
Cisco	Web Security Appliance	9.1.2-010

References

http://www.securityfocus.com/bid/96907Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038043
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wsaVendor Advisory
http://www.securityfocus.com/bid/96907Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038043
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-wsaVendor Advisory

Timeline

Published: Mar 17, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-3870?

How severe is CVE-2017-3870?

Severity scoring for CVE-2017-3870 is pending analysis. The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2017-3870?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-3870?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST