CVE-2015-4236

Name: CVE-2015-4236
Creator: NVD / NIST
Published: 2015-07-10T19:59:00.097+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.39%

Last modified Jun 17, 2026

CVE-2015-4236 is a vulnerability of currently unknown severity. Cisco AsyncOS on Email Security Appliance (ESA) devices with software 8.5.6-073, 8.5.6-074, and 9.0.0-461, when clustering is enabled, allows remote attackers to cause a denial of service (clustering and SSH outage) via a packet flood, aka Bug IDs CSCur13704 and CSCuq05636.. EPSS estimates a 2.39% chance of exploitation in the next 30 days.

Description

Cisco AsyncOS on Email Security Appliance (ESA) devices with software 8.5.6-073, 8.5.6-074, and 9.0.0-461, when clustering is enabled, allows remote attackers to cause a denial of service (clustering and SSH outage) via a packet flood, aka Bug IDs CSCur13704 and CSCuq05636.

Metrics

EPSS Probability

2.39%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Cisco	Email Security Appliance	8.5.6-074
Cisco	Email Security Appliance Firmware	8.5.6-073
Cisco	Email Security Appliance Firmware	9.0.0-461

References

http://tools.cisco.com/security/center/viewAlert.x?alertId=39785Vendor Advisory
http://www.securityfocus.com/bid/75703Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032855Third Party Advisory, VDB Entry
http://tools.cisco.com/security/center/viewAlert.x?alertId=39785Vendor Advisory
http://www.securityfocus.com/bid/75703Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032855Third Party Advisory, VDB Entry

Timeline

Published: Jul 10, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4236?

How severe is CVE-2015-4236?

Severity scoring for CVE-2015-4236 is pending analysis. The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4236?

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-2015-4236?

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

Scan your code now

Source: NVD / NIST