CVE-2012-4651

Name: CVE-2012-4651
Creator: NVD / NIST
Published: 2014-04-23T11:52:59.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.08%

Last modified Jun 16, 2026

CVE-2012-4651 is a vulnerability of currently unknown severity. Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

Description

Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.

Metrics

EPSS Probability

1.08%

60.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-189

Affected Software

Vendor	Product	Versions
Cisco	Ios	<= 15.3\(3\)m2
Cisco	Ios	15.3
Cisco	Ios	15.3\(2\)s
Cisco	Ios	15.3\(3\)m
Cisco	Ios	15.3\(3\)m1
Cisco	Ios	15.3\(3\)s
Cisco	Ios	15.3s

References

Timeline

Published: Apr 23, 2014
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4651?

How severe is CVE-2012-4651?

Severity scoring for CVE-2012-4651 is pending analysis. The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4651?

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-2012-4651?

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

Scan your code now

Source: NVD / NIST