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CVE-2016-1426

20
FAUCET Score

CVE-2016-1426 is a denial-of-service vulnerability affecting Cisco IOS XR versions 5.x through 5.2.5 on NCS 6000 devices. Remote attackers can exploit this flaw by sending crafted SSH traffic, leading to timer consumption and a Route Processor reload. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network without authentication, resulting in high availability impact. There is no evidence of active exploitation, nor is public exploit code available, and it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.0.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.0.0:*:*:*:*:*:*:*
5.0.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.0.1:*:*:*:*:*:*:*
5.0_baseCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.0_base:*:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.1.0:*:*:*:*:*:*:*
5.1.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.1.1:*:*:*:*:*:*:*

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
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 61st 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

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-20160713-ncs6k
Vendor Advisory
securityfocus.com / bid/91748
securitytracker.com / id/1036295