CVE-2013-6694

Name: CVE-2013-6694
Creator: NVD / NIST
Published: 2013-11-22T19:55:09.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.08%

Last modified Jun 17, 2026

CVE-2013-6694 is a vulnerability of currently unknown severity. The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

Description

The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.

Metrics

EPSS Probability

1.08%

60.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios	All versions

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6694Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6694Vendor Advisory

Timeline

Published: Nov 22, 2013
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-6694?

The IPSec implementation in Cisco IOS allows remote attackers to cause a denial of service (MTU change and tunnel-session drop) via crafted ICMP packets, aka Bug ID CSCul29918.

How severe is CVE-2013-6694?

Severity scoring for CVE-2013-6694 is pending analysis. The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2013-6694?

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-2013-6694?

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

Scan your code now

Source: NVD / NIST