CVE-2013-6981

Cisco IOS XE 3.7S(.1) and earlier allows remote attackers to cause a denial of service (Packet Processor crash) via fragmented MPLS IP packets, aka Bug ID CSCul00709.

Published: 2013-12-28 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6981 is rated Moderate Risk (51.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.03%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-6981

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.76% 3.03% +0.27%
2 2026-04-08 1.95% 2.76% +0.81%
3 2026-03-25 — 1.95% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6981

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 2.0 MEDIUM
AV:N/AC:H/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 4.9 6.9 [email protected]

Weakness enumeration for CVE-2013-6981

Affected software / configurations for CVE-2013-6981

Vendor Product Version Raw CPE
cisco ios_xe <= 3.7s\(.1\) cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios_xe 2.5\(.0\) cpe:2.3:o:cisco:ios_xe:2.5\(.0\):*:*:*:*:*:*:*
cisco ios_xe 2.6\(.0\) cpe:2.3:o:cisco:ios_xe:2.6\(.0\):*:*:*:*:*:*:*
cisco ios_xe 2.6\(.1\) cpe:2.3:o:cisco:ios_xe:2.6\(.1\):*:*:*:*:*:*:*
cisco ios_xe 2.6\(.2\) cpe:2.3:o:cisco:ios_xe:2.6\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.1s\(.0\) cpe:2.3:o:cisco:ios_xe:3.1s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.1s\(.1\) cpe:2.3:o:cisco:ios_xe:3.1s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.1s\(.2\) cpe:2.3:o:cisco:ios_xe:3.1s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.1s\(.3\) cpe:2.3:o:cisco:ios_xe:3.1s\(.3\):*:*:*:*:*:*:*
cisco ios_xe 3.2s\(.0\) cpe:2.3:o:cisco:ios_xe:3.2s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.2s\(.1\) cpe:2.3:o:cisco:ios_xe:3.2s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.2s\(.2\) cpe:2.3:o:cisco:ios_xe:3.2s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.3s\(.0\) cpe:2.3:o:cisco:ios_xe:3.3s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.3s\(.1\) cpe:2.3:o:cisco:ios_xe:3.3s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.3s\(.2\) cpe:2.3:o:cisco:ios_xe:3.3s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.0\) cpe:2.3:o:cisco:ios_xe:3.4s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.1\) cpe:2.3:o:cisco:ios_xe:3.4s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.2\) cpe:2.3:o:cisco:ios_xe:3.4s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.3\) cpe:2.3:o:cisco:ios_xe:3.4s\(.3\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.4\) cpe:2.3:o:cisco:ios_xe:3.4s\(.4\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.5\) cpe:2.3:o:cisco:ios_xe:3.4s\(.5\):*:*:*:*:*:*:*
cisco ios_xe 3.4s\(.6\) cpe:2.3:o:cisco:ios_xe:3.4s\(.6\):*:*:*:*:*:*:*
cisco ios_xe 3.5s\(.0\) cpe:2.3:o:cisco:ios_xe:3.5s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.5s\(.1\) cpe:2.3:o:cisco:ios_xe:3.5s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.5s\(.2\) cpe:2.3:o:cisco:ios_xe:3.5s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.6s\(.0\) cpe:2.3:o:cisco:ios_xe:3.6s\(.0\):*:*:*:*:*:*:*
cisco ios_xe 3.6s\(.1\) cpe:2.3:o:cisco:ios_xe:3.6s\(.1\):*:*:*:*:*:*:*
cisco ios_xe 3.6s\(.2\) cpe:2.3:o:cisco:ios_xe:3.6s\(.2\):*:*:*:*:*:*:*
cisco ios_xe 3.7s\(.0\) cpe:2.3:o:cisco:ios_xe:3.7s\(.0\):*:*:*:*:*:*:*

References for CVE-2013-6981

cvelogic Threat Intelligence