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CVE-2016-6467

20
FAUCET Score

CVE-2016-6467 describes a denial-of-service vulnerability in Cisco ASR 5000 Series Switches, specifically within the IPv6 packet fragment reassembly of StarOS. An unauthenticated, remote attacker can exploit this to cause an unexpected reload of the Network Processing Unit (NPU) process. With a CVSS score of 7.5 (High), this flaw is easily exploitable over the network with low attack complexity, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
20.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:asr_5000_series_software:20.0.0:*:*:*:*:*:*:*
21.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:asr_5000_series_software:21.0.0:*:*:*:*:*:*:*
21.0.m0.64702CPE matchmatch criteria
cpe:2.3:a:cisco:asr_5000_series_software:21.0.m0.64702:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.48%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0348 is in the 78th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20161207-asr
Vendor Advisory
securityfocus.com / bid/94772
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037416
Third Party AdvisoryVDB Entry