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CVE-2017-12229

32
FAUCET Score

CVE-2017-12229 is a critical vulnerability in the REST API of the web-based user interface (web UI) of Cisco IOS XE versions 3.1 through 16.5. This flaw, stemming from insufficient input validation, allows an unauthenticated, remote attacker to bypass authentication to the web UI. With a CVSS score of 9.8 (CRITICAL), a successful exploit grants full access to the affected device's web UI, leading to high confidentiality, integrity, and availability impacts. While there is no known active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered significant community attention with 11 mentions and one media article, indicating its perceived risk.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.3asCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.1.3as:*:*:*:*:*:*:*
3.2.0jaCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:*
3.2.1xoCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.2.1xo:*:*:*:*:*:*:*
3.4.7asgCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.4.7asg:*:*:*:*:*:*:*
3.6.5beCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:3.6.5be:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.12%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0512 is in the 86th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-20170927-restapi
Vendor Advisory
securityfocus.com / bid/101032
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039447
Third Party AdvisoryVDB Entry