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CVE-2013-6981

21
FAUCET Score

CVE-2013-6981 describes a denial-of-service vulnerability affecting Cisco IOS XE 3.7S(.1) and earlier versions, where specially crafted fragmented MPLS IP packets can cause a Packet Processor crash. This vulnerability has a CVSS score of 5.4, indicating a medium severity, and can be exploited remotely with high attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.7s\(.1\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
2.5\(.0\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:2.5\(.0\):*:*:*:*:*:*:*
2.6\(.0\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:2.6\(.0\):*:*:*:*:*:*:*
2.6\(.1\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:2.6\(.1\):*:*:*:*:*:*:*
2.6\(.2\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:2.6\(.2\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.4MEDIUM

AV:N/AC:H/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.03%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0303 is in the 79th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

osvdb.org / 101423
secunia.com / advisories/56206
tools.cisco.com / security/center/content/CiscoSecurityNotice/CVE-2013-6981
Vendor Advisory
tools.cisco.com / security/center/viewAlert.x
Vendor Advisory
securityfocus.com / bid/64514
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029538
Third Party AdvisoryVDB Entry