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CVE-2016-6455

26
FAUCET Score

CVE-2016-6455 describes a denial of service vulnerability affecting Cisco ASR 5500 Series routers with Data Processing Card 2 (DPC2) running StarOS 18.0 or later. An unauthenticated, remote attacker can exploit a flaw in the Slowpath to disconnect a subset of subscriber sessions. This vulnerability carries a CVSSv3 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability, though without affecting confidentiality or integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
18.0.0CPE matchmatch criteria
cpe:2.3:o:cisco:asr_5000_software:18.0.0:*:*:*:*:*:*:*
18.0.0.57828CPE matchmatch criteria
cpe:2.3:o:cisco:asr_5000_software:18.0.0.57828:*:*:*:*:*:*:*
18.0.0.59167CPE matchmatch criteria
cpe:2.3:o:cisco:asr_5000_software:18.0.0.59167:*:*:*:*:*:*:*
18.0.0.59211CPE matchmatch criteria
cpe:2.3:o:cisco:asr_5000_software:18.0.0.59211:*:*:*:*:*:*:*
18.0.l0.59219CPE matchmatch criteria
cpe:2.3:o:cisco:asr_5000_software:18.0.l0.59219:*:*:*:*:*:*:*

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
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 58th percentile among its peer group of 51,485 CVEs.

Social Chatter

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-20161102-asr
Vendor Advisory
securityfocus.com / bid/94071
securitytracker.com / id/1037186